Greenfield Academy — Middle School Space Utilization

Greenfield Academy Middle School Space Utilization — Pilot Analysis

Greenfield Academy | Middle School Division

Report Date: April 08, 2026

Prepared by: 5Rs Partnership - SpaceLogic Analytics

Academic Year: Q1, Academic Year

Analytic Scope This report covers the Greenfield Academy Middle School grades only. Data reflects Q1, Academic Year. Schedule analysis is limited to Periods 2–5 (core academic sections). Period 1 electives, homeroom, and non-academic blocks are excluded from all metrics. Specialist rooms shared with other divisions are reported separately in Section 7.

Metric Reference Legend

ATUAvg Time Utilization ASOAvg Seat Occupancy CSUICombined Space Utilization Index RERRoom Exclusivity Rate SERSpace Elasticity Ratio PDRPeak Demand Ratio PSMIQualitative — see §7 SSDNot computed — school-wide data unavailable

2. School-Wide Summary

Aggregated metrics for the MS division as a whole: one number per metric across all in-scope rooms. See Key Findings (Section 3) for interpretation.

50.0%

ATU

Avg Time Utilization — MS-exclusive rooms

72.9%

ASO

Avg Seat Occupancy — MS-exclusive rooms

31.3%

CSUI

Avg Combined Index — all MS rooms

53.3%

RER

Room Exclusivity Rate — MS division

ATU averages 50% across MS-exclusive rooms; roughly half of available P2–P5 time is unscheduled. When sessions run, rooms fill to 72.9% on average, within the 60–75% target band.

⚠ Note — Period 1 excluded from both numerator and denominator. The ATU denominator is 23.33 hrs/wk = 4 in-scope periods (P2–P5) × 70 min × 5 days. Period 1 (electives and homeroom/advisory) is excluded from the schedule grid and from the denominator. ATU reflects P2–P5 core academic scheduling only. For rooms with confirmed P1 elective use, adding Period 1 would shift both numerator and denominator, but the net effect on ATU is indeterminate: P1 session frequency was not in the schedule data.

3. Key Findings

Time utilization. MS rooms average 50% ATU, meaning roughly half of available P2–P5 time is unscheduled. Whether the unused half represents genuine scheduling headroom depends on factors outside this dataset: full faculty load, non-teaching duties, and multi-division coordination.
Seat occupancy. When sessions do run, MS rooms fill to 73% on average, within the 60–75% target band, but the distribution is wide. The Seminar Room and Rm 207 approach or exceed rated capacity at peak; Rm 208 and Rm 202 run consistently small classes relative to room size. These opposite problems call for different questions: Is the Seminar Room’s high occupancy driven by enrollment alone, or do its features attract scheduling preference? Rm 208 runs a specialized small-enrollment course; small enrollment is structural for this type of elective. Rm 202 hosts core academic sections where enrollment is smaller by program design; whether this reflects section-level grouping or a broader program decision is a question for the school.
Space elasticity. None of the 15 rooms can flex by ±30% enrollment variation without breaching either overcrowding or underfilling bounds. Rooms are either structurally tight (peak demand approaches capacity) or loose (low demand underutilizes the room), but cannot reliably absorb the swings that scheduling sometimes produces. The 3×3 matrix in §6.4 shows room elasticity against the school’s own enrollment quartiles, offering a complementary frame for identifying which rooms have practical flexibility within the school’s distribution.
Scheduling distribution. MS scheduling is evenly distributed across Periods 2–5 on both A and B days (PDR ≈ 1.1). No period concentrates demand. The ATU shortfall is a scheduling frequency problem, not a period distribution problem: the gap is in how often rooms are scheduled, not in which period carries the load.
Scheduling control. Of the 15 MS rooms in scope, 8 are MS-exclusive and 7 are shared with Grade 5 or whole-school programs. Scheduling changes to the shared rooms require cross-division coordination; the MS division’s independent leverage is limited to the 8 exclusive rooms.

If Q1 scheduling reflects Greenfield Academy’s typical pattern (and if scheduling decisions for the 8 MS-exclusive rooms sit within the MS division), these rooms average roughly 25 percentage points below the ATU target: scheduled half the time when three-quarters is the goal. The rooms are there; the gap is in how often they are scheduled. That reframes the capacity question: not whether this school has enough rooms, but whether the current faculty load and section structure are using what the MS division already holds.

4. Room Scorecard — Periods 2–5, Q1 2025–26

One row per room — all metrics at a glance. Schedule coverage map in Section 5; per-metric detail in Section 6.

Table 1: Room scorecard — all metrics, Periods 2–5, Q1 2025–26. [S] = shared room.
Room	Type	Ownership	ATU %	Sched hrs/wk	ASO %	Enroll (wtd avg)	Capacity	CSUI %	SER	CSUI Band
Lab 101	Science Lab	Exclusive (MS)	50.0%	11.7	69.0%	23.0	29	34.5%	Moderate	Median–75th pctile
Rm 202	Classroom	Exclusive (MS)	56.3%	13.1	42.9%	13.8	28	24.2%	Underutilized	25th pctile–Median
Rm 204	Classroom	Exclusive (MS)	50.0%	11.7	80.0%	27.6	30	40.0%	Well utilized	Top 25%
Rm 205	Classroom	Exclusive (MS)	25.0%	5.8	80.0%	27.6	30	20.0%	Well utilized	Bottom 25%
Rm 206	Classroom	Exclusive (MS)	50.0%	11.7	66.7%	23.0	30	33.4%	Moderate	Median–75th pctile
Rm 209	Classroom	Exclusive (MS)	56.3%	13.1	62.5%	17.2	24	35.2%	Volatile	Median–75th pctile
Rm 210	Classroom	Exclusive (MS)	50.0%	11.7	83.3%	23.0	24	41.6%	Well utilized	Top 25%
Seminar Room	Classroom	Exclusive (MS)	62.5%	14.6	98.9%	21.6	19	61.8%	Under pressure	Top 25%
Rm 201 [S]	Classroom	Shared w/ Grade 5	39.2%	8.8	58.6%	19.5	29	23.0%	Chronically sparse	Bottom 25%
Rm 203 [S]	Classroom	Shared w/ Grade 5	42.9%	8.8	58.9%	20.3	30	25.3%	Moderate	25th pctile–Median
Rm 207 [S]	Classroom	Shared w/ Grade 5	33.3%	5.8	92.3%	27.6	26	30.7%	At/over capacity	Median–75th pctile
Rm 208 [S]	Classroom	Shared w/ Grade 5	42.9%	8.8	27.8%	7.7	24	11.9%	Chronically sparse	Bottom 25%
Studio A [S]	Specialist	Shared w/ School	50.0%	11.7	83.7%	25.0	26	41.9%	Under pressure	Top 25%
Studio B [S]	Specialist	Shared w/ School	25.0%	5.8	68.3%	23.6	30	17.1%	Moderate	Bottom 25%
Studio C [S]	Specialist	Shared w/ School	43.8%	10.2	66.9%	19.2	25	29.3%	Moderate	25th pctile–Median

[S] Rooms shared with Grade 5 or other divisions carry ATU/ASO caveats: metrics reflect MS Periods 2–5 usage only. See Section 8.

SER result reflects the ±30% elasticity test on the 2-week Q1 enrollment range.

5. Schedule Map

Room × period × day-type occupancy across the 2-week Q1 grid.

Column notation: Each period is split into two 35-min blocks: P2i = Period 2 first half (08:50–09:25) · P2ii = Period 2 second half (09:25–10:00), and so on for P3–P5. A 70-min class spans both halves and appears as a merged cell. A 35-min class occupies one half only.

Seat occupancy % (enrollment ÷ room capacity):

0% 25% 50% 75% 100% >100% Vacant

A-Day (canonical Monday)

Room	P2i	P2ii	P3i	P3ii	P4i	P4ii	P5i	P5ii
	08:50-09:25	09:25-10:00	10:30-11:05	11:05-11:40	11:45-12:20	12:20-12:55	13:45-14:20	14:20-14:55
Lab 101 MS only · Science Lab 1,270 sqft · 29 seats	65.5% (19/29) Lab 101 · Period 2 · A-day 7 LifeSci (Blue) Teacher_03 Enrollment: 19 / 29 seats · Occupancy: 65.5%		69.0% (20/29) Lab 101 · Period 3 · A-day 7 LifeSci (Gold) Teacher_03 Enrollment: 20 / 29 seats · Occupancy: 69.0%		— Lab 101 · Period 4 · A-day Vacant	— Lab 101 · Period 4 · A-day Vacant	— Lab 101 · Period 5 · A-day Vacant	— Lab 101 · Period 5 · A-day Vacant
Rm 202 MS only · Classroom 907 sqft · 28 seats	21.4% (6/28) Rm 202 · Period 2 · A-day 6 Math6 (Blue) Teacher_09 Enrollment: 6 / 28 seats · Occupancy: 21.4%	71.4% (20/28) Rm 202 · Period 2 · A-day 6 Math6 (Gold) Teacher_09 Enrollment: 20 / 28 seats · Occupancy: 71.4%	— Rm 202 · Period 3 · A-day Vacant	— Rm 202 · Period 3 · A-day Vacant	35.7% (10/28) Rm 202 · Period 4 · A-day 7 PreAlg (Gold) Teacher_09 Enrollment: 10 / 28 seats · Occupancy: 35.7%		— Rm 202 · Period 5 · A-day Vacant	— Rm 202 · Period 5 · A-day Vacant
Rm 204 MS only · Classroom 972 sqft · 30 seats	— Rm 204 · Period 2 · A-day Vacant	— Rm 204 · Period 2 · A-day Vacant	— Rm 204 · Period 3 · A-day Vacant	— Rm 204 · Period 3 · A-day Vacant	80.0% (24/30) Rm 204 · Period 4 · A-day 6 LangArts (Blue) Teacher_06 Enrollment: 24 / 30 seats · Occupancy: 80.0%		80.0% (24/30) Rm 204 · Period 5 · A-day 6 LangArts (Gold) Teacher_06 Enrollment: 24 / 30 seats · Occupancy: 80.0%
Rm 205 MS only · Classroom 972 sqft · 30 seats	— Rm 205 · Period 2 · A-day Vacant	— Rm 205 · Period 2 · A-day Vacant	— Rm 205 · Period 3 · A-day Vacant	— Rm 205 · Period 3 · A-day Vacant	80.0% (24/30) Rm 205 · Period 4 · A-day 6 GlobStud (Gold) Teacher_02 Enrollment: 24 / 30 seats · Occupancy: 80.0%		80.0% (24/30) Rm 205 · Period 5 · A-day 6 GlobStud (Blue) Teacher_02 Enrollment: 24 / 30 seats · Occupancy: 80.0%
Rm 206 MS only · Classroom 972 sqft · 30 seats	66.7% (20/30) Rm 206 · Period 2 · A-day 8 USHist (Blue) Teacher_01 Enrollment: 20 / 30 seats · Occupancy: 66.7%		— Rm 206 · Period 3 · A-day Vacant	— Rm 206 · Period 3 · A-day Vacant	— Rm 206 · Period 4 · A-day Vacant	— Rm 206 · Period 4 · A-day Vacant	70.0% (21/30) Rm 206 · Period 5 · A-day 8 USHist (Gold) Teacher_01 Enrollment: 21 / 30 seats · Occupancy: 70.0%
Rm 209 MS only · Classroom 795 sqft · 24 seats	91.7% (22/24) Rm 209 · Period 2 · A-day 6 PreAlg (Blue) Teacher_05 Enrollment: 22 / 24 seats · Occupancy: 91.7%	— Rm 209 · Period 2 · A-day Vacant	58.3% (14/24) Rm 209 · Period 3 · A-day 8 Alg1H (Blue) Teacher_05 Enrollment: 14 / 24 seats · Occupancy: 58.3%		37.5% (9/24) Rm 209 · Period 4 · A-day 7 PreAlg (Blue) Teacher_05 Enrollment: 9 / 24 seats · Occupancy: 37.5%		— Rm 209 · Period 5 · A-day Vacant	— Rm 209 · Period 5 · A-day Vacant
Rm 210 MS only · Classroom 795 sqft · 24 seats	— Rm 210 · Period 2 · A-day Vacant	— Rm 210 · Period 2 · A-day Vacant	79.2% (19/24) Rm 210 · Period 3 · A-day 7 LangArt70 (Blue) Teacher_10 Enrollment: 19 / 24 seats · Occupancy: 79.2%		— Rm 210 · Period 4 · A-day Vacant	— Rm 210 · Period 4 · A-day Vacant	83.3% (20/24) Rm 210 · Period 5 · A-day 7 LangArt70 (Gold) Teacher_10 Enrollment: 20 / 24 seats · Occupancy: 83.3%
Seminar Room MS only · Classroom 626 sqft · 19 seats	110.5% (21/19) Seminar Room · Period 2 · A-day 8 WritResS1 (Gold) Teacher_07 Enrollment: 21 / 19 seats · Occupancy: 110.5%		110.5% (21/19) Seminar Room · Period 3 · A-day 6 Span (Gold) Teacher_15 Enrollment: 21 / 19 seats · Occupancy: 110.5%		89.5% (17/19) Seminar Room · Period 4 · A-day 8 Span (Gold) Teacher_15 Enrollment: 17 / 19 seats · Occupancy: 89.5%		105.3% (20/19) Seminar Room · Period 5 · A-day 8 WritResS1 (Blue) Teacher_07 Enrollment: 20 / 19 seats · Occupancy: 105.3%
Rm 201 MS+Gr5 · Classroom 955 sqft · 29 seats	— Rm 201 · Period 2 · A-day Vacant	— Rm 201 · Period 2 · A-day Vacant	48.3% (14/29) Rm 201 · Period 3 · A-day 8 Alg1H (Gold) Teacher_14 Enrollment: 14 / 29 seats · Occupancy: 48.3%		69.0% (20/29) Rm 201 · Period 4 · A-day 7 Alg1H (Blue) Teacher_14 Enrollment: 20 / 29 seats · Occupancy: 69.0%		— Rm 201 · Period 5 · A-day Vacant	— Rm 201 · Period 5 · A-day Vacant
Rm 203 MS+Gr5 · Classroom 972 sqft · 30 seats	— Rm 203 · Period 2 · A-day Vacant	— Rm 203 · Period 2 · A-day Vacant	70.0% (21/30) Rm 203 · Period 3 · A-day 6 Span (Blue) Teacher_04 Enrollment: 21 / 30 seats · Occupancy: 70.0%		56.7% (17/30) Rm 203 · Period 4 · A-day 8 Span (Blue) Teacher_04 Enrollment: 17 / 30 seats · Occupancy: 56.7%		— Rm 203 · Period 5 · A-day Vacant	— Rm 203 · Period 5 · A-day Vacant
Rm 207 MS+Gr5 · Classroom 864 sqft · 26 seats	— Rm 207 · Period 2 · A-day Vacant	— Rm 207 · Period 2 · A-day Vacant	— Rm 207 · Period 3 · A-day Vacant	— Rm 207 · Period 3 · A-day Vacant	— Rm 207 · Period 4 · A-day Vacant	— Rm 207 · Period 4 · A-day Vacant	— Rm 207 · Period 5 · A-day Vacant	— Rm 207 · Period 5 · A-day Vacant
Rm 208 MS+Gr5 · Classroom 795 sqft · 24 seats	— Rm 208 · Period 2 · A-day Vacant	— Rm 208 · Period 2 · A-day Vacant	25.0% (6/24) Rm 208 · Period 3 · A-day 6 Latin (Gold) Teacher_17 Enrollment: 6 / 24 seats · Occupancy: 25.0%		29.2% (7/24) Rm 208 · Period 4 · A-day 8 Latin (Gold) Teacher_17 Enrollment: 7 / 24 seats · Occupancy: 29.2%		— Rm 208 · Period 5 · A-day Vacant	— Rm 208 · Period 5 · A-day Vacant
Studio A School-wide · Specialist 1,264 sqft · 26 seats	76.9% (20/26) Studio A · Period 2 · A-day 7 ArtS1 (Gold) Teacher_11 Enrollment: 20 / 26 seats · Occupancy: 76.9%		— Studio A · Period 3 · A-day Vacant	— Studio A · Period 3 · A-day Vacant	— Studio A · Period 4 · A-day Vacant	— Studio A · Period 4 · A-day Vacant	73.1% (19/26) Studio A · Period 5 · A-day 7 ArtS1 (Blue) Teacher_11 Enrollment: 19 / 26 seats · Occupancy: 73.1%
Studio B School-wide · Specialist 1,474 sqft · 30 seats	— Studio B · Period 2 · A-day Vacant	— Studio B · Period 2 · A-day Vacant	— Studio B · Period 3 · A-day Vacant	— Studio B · Period 3 · A-day Vacant	— Studio B · Period 4 · A-day Vacant	— Studio B · Period 4 · A-day Vacant	— Studio B · Period 5 · A-day Vacant	— Studio B · Period 5 · A-day Vacant
Studio C School-wide · Specialist 816 sqft · 25 seats	— Studio C · Period 2 · A-day Vacant	— Studio C · Period 2 · A-day Vacant	52.0% (13/25) Studio C · Period 3 · A-day 8 Geom (Blue) Teacher_13 Enrollment: 13 / 25 seats · Occupancy: 52.0%		— Studio C · Period 4 · A-day Vacant	— Studio C · Period 4 · A-day Vacant	— Studio C · Period 5 · A-day Vacant	— Studio C · Period 5 · A-day Vacant

B-Day (canonical Tuesday)

Room	P2i	P2ii	P3i	P3ii	P4i	P4ii	P5i	P5ii
	08:50-09:25	09:25-10:00	10:30-11:05	11:05-11:40	11:45-12:20	12:20-12:55	13:45-14:20	14:20-14:55
Lab 101 MS only · Science Lab 1,270 sqft · 29 seats	69.0% (20/29) Lab 101 · Period 2 · B-day 8 PhysSciH (Blue) Teacher_17 Enrollment: 20 / 29 seats · Occupancy: 69.0%		— Lab 101 · Period 3 · B-day Vacant	— Lab 101 · Period 3 · B-day Vacant	72.4% (21/29) Lab 101 · Period 4 · B-day 8 PhysSciH (Gold) Teacher_17 Enrollment: 21 / 29 seats · Occupancy: 72.4%		— Lab 101 · Period 5 · B-day Vacant	— Lab 101 · Period 5 · B-day Vacant
Rm 202 MS only · Classroom 907 sqft · 28 seats	21.4% (6/28) Rm 202 · Period 2 · B-day 6 Math6 (Blue) Teacher_09 Enrollment: 6 / 28 seats · Occupancy: 21.4%		— Rm 202 · Period 3 · B-day Vacant	— Rm 202 · Period 3 · B-day Vacant	35.7% (10/28) Rm 202 · Period 4 · B-day 7 PreAlg (Gold) Teacher_09 Enrollment: 10 / 28 seats · Occupancy: 35.7%	— Rm 202 · Period 4 · B-day Vacant	71.4% (20/28) Rm 202 · Period 5 · B-day 6 Math6 (Gold) Teacher_09 Enrollment: 20 / 28 seats · Occupancy: 71.4%
Rm 204 MS only · Classroom 972 sqft · 30 seats	— Rm 204 · Period 2 · B-day Vacant	— Rm 204 · Period 2 · B-day Vacant	80.0% (24/30) Rm 204 · Period 3 · B-day 6 LangArts (Gold) Teacher_06 Enrollment: 24 / 30 seats · Occupancy: 80.0%		80.0% (24/30) Rm 204 · Period 4 · B-day 6 LangArts (Blue) Teacher_06 Enrollment: 24 / 30 seats · Occupancy: 80.0%		— Rm 204 · Period 5 · B-day Vacant	— Rm 204 · Period 5 · B-day Vacant
Rm 205 MS only · Classroom 972 sqft · 30 seats	— Rm 205 · Period 2 · B-day Vacant	— Rm 205 · Period 2 · B-day Vacant	— Rm 205 · Period 3 · B-day Vacant	— Rm 205 · Period 3 · B-day Vacant	— Rm 205 · Period 4 · B-day Vacant	— Rm 205 · Period 4 · B-day Vacant	— Rm 205 · Period 5 · B-day Vacant	— Rm 205 · Period 5 · B-day Vacant
Rm 206 MS only · Classroom 972 sqft · 30 seats	66.7% (20/30) Rm 206 · Period 2 · B-day 7 USHist (Gold) Teacher_01 Enrollment: 20 / 30 seats · Occupancy: 66.7%		— Rm 206 · Period 3 · B-day Vacant	— Rm 206 · Period 3 · B-day Vacant	— Rm 206 · Period 4 · B-day Vacant	— Rm 206 · Period 4 · B-day Vacant	63.3% (19/30) Rm 206 · Period 5 · B-day 7 USHist (Blue) Teacher_01 Enrollment: 19 / 30 seats · Occupancy: 63.3%
Rm 209 MS only · Classroom 795 sqft · 24 seats	91.7% (22/24) Rm 209 · Period 2 · B-day 6 PreAlg (Blue) Teacher_05 Enrollment: 22 / 24 seats · Occupancy: 91.7%		— Rm 209 · Period 3 · B-day Vacant	58.3% (14/24) Rm 209 · Period 3 · B-day 8 Alg1H (Blue) Teacher_05 Enrollment: 14 / 24 seats · Occupancy: 58.3%	37.5% (9/24) Rm 209 · Period 4 · B-day 7 PreAlg (Blue) Teacher_05 Enrollment: 9 / 24 seats · Occupancy: 37.5%	— Rm 209 · Period 4 · B-day Vacant	— Rm 209 · Period 5 · B-day Vacant	— Rm 209 · Period 5 · B-day Vacant
Rm 210 MS only · Classroom 795 sqft · 24 seats	— Rm 210 · Period 2 · B-day Vacant	— Rm 210 · Period 2 · B-day Vacant	— Rm 210 · Period 3 · B-day Vacant	— Rm 210 · Period 3 · B-day Vacant	83.3% (20/24) Rm 210 · Period 4 · B-day 8 LangArt70 (Blue) Teacher_10 Enrollment: 20 / 24 seats · Occupancy: 83.3%		87.5% (21/24) Rm 210 · Period 5 · B-day 8 LangArt70 (Gold) Teacher_10 Enrollment: 21 / 24 seats · Occupancy: 87.5%
Seminar Room MS only · Classroom 626 sqft · 19 seats	— Seminar Room · Period 2 · B-day Vacant	— Seminar Room · Period 2 · B-day Vacant	78.9% (15/19) Seminar Room · Period 3 · B-day 7 Span (Gold) Teacher_07 Enrollment: 15 / 19 seats · Occupancy: 78.9%		— Seminar Room · Period 4 · B-day Vacant	— Seminar Room · Period 4 · B-day Vacant	— Seminar Room · Period 5 · B-day Vacant	— Seminar Room · Period 5 · B-day Vacant
Rm 201 MS+Gr5 · Classroom 955 sqft · 29 seats	— Rm 201 · Period 2 · B-day Vacant	— Rm 201 · Period 2 · B-day Vacant	— Rm 201 · Period 3 · B-day Vacant	48.3% (14/29) Rm 201 · Period 3 · B-day 8 Alg1H (Gold) Teacher_14 Enrollment: 14 / 29 seats · Occupancy: 48.3%	69.0% (20/29) Rm 201 · Period 4 · B-day 7 Alg1H (Blue) Teacher_14 Enrollment: 20 / 29 seats · Occupancy: 69.0%	— Rm 201 · Period 4 · B-day Vacant	— Rm 201 · Period 5 · B-day Vacant	— Rm 201 · Period 5 · B-day Vacant
Rm 203 MS+Gr5 · Classroom 972 sqft · 30 seats	— Rm 203 · Period 2 · B-day Vacant	— Rm 203 · Period 2 · B-day Vacant	50.0% (15/30) Rm 203 · Period 3 · B-day 7 Span (Blue) Teacher_04 Enrollment: 15 / 30 seats · Occupancy: 50.0%		— Rm 203 · Period 4 · B-day Vacant	— Rm 203 · Period 4 · B-day Vacant	— Rm 203 · Period 5 · B-day Vacant	— Rm 203 · Period 5 · B-day Vacant
Rm 207 MS+Gr5 · Classroom 864 sqft · 26 seats	— Rm 207 · Period 2 · B-day Vacant	— Rm 207 · Period 2 · B-day Vacant	92.3% (24/26) Rm 207 · Period 3 · B-day 6 EarthSci (Blue) Teacher_18 Enrollment: 24 / 26 seats · Occupancy: 92.3%		92.3% (24/26) Rm 207 · Period 4 · B-day 6 EarthSci (Gold) Teacher_18 Enrollment: 24 / 26 seats · Occupancy: 92.3%		— Rm 207 · Period 5 · B-day Vacant	— Rm 207 · Period 5 · B-day Vacant
Rm 208 MS+Gr5 · Classroom 795 sqft · 24 seats	— Rm 208 · Period 2 · B-day Vacant	— Rm 208 · Period 2 · B-day Vacant	29.2% (7/24) Rm 208 · Period 3 · B-day 7 Latin (Gold) Teacher_17 Enrollment: 7 / 24 seats · Occupancy: 29.2%		— Rm 208 · Period 4 · B-day Vacant	— Rm 208 · Period 4 · B-day Vacant	— Rm 208 · Period 5 · B-day Vacant	— Rm 208 · Period 5 · B-day Vacant
Studio A School-wide · Specialist 1,264 sqft · 26 seats	76.9% (20/26) Studio A · Period 2 · B-day 6 EnrArtQ1 (Gold) Teacher_11 Enrollment: 20 / 26 seats · Occupancy: 76.9%		— Studio A · Period 3 · B-day Vacant	— Studio A · Period 3 · B-day Vacant	— Studio A · Period 4 · B-day Vacant	— Studio A · Period 4 · B-day Vacant	107.7% (28/26) Studio A · Period 5 · B-day 6 EnrArtQ1 (Blue) Teacher_11 Enrollment: 28 / 26 seats · Occupancy: 107.7%
Studio B School-wide · Specialist 1,474 sqft · 30 seats	70.0% (21/30) Studio B · Period 2 · B-day 8 EnrPerfQ1 (Gold) Teacher_07/Teacher_08 Enrollment: 21 / 30 seats · Occupancy: 70.0%		— Studio B · Period 3 · B-day Vacant	— Studio B · Period 3 · B-day Vacant	— Studio B · Period 4 · B-day Vacant	— Studio B · Period 4 · B-day Vacant	66.7% (20/30) Studio B · Period 5 · B-day 8 EnrPerfQ1 (Blue) Teacher_07/Teacher_08 Enrollment: 20 / 30 seats · Occupancy: 66.7%
Studio C School-wide · Specialist 816 sqft · 25 seats	76.0% (19/25) Studio C · Period 2 · B-day 7 EnrReligQ1 (Blue) Teacher_13 Enrollment: 19 / 25 seats · Occupancy: 76.0%		— Studio C · Period 3 · B-day Vacant	52.0% (13/25) Studio C · Period 3 · B-day 8 Geom (Blue) Teacher_13 Enrollment: 13 / 25 seats · Occupancy: 52.0%	— Studio C · Period 4 · B-day Vacant	— Studio C · Period 4 · B-day Vacant	80.0% (20/25) Studio C · Period 5 · B-day 7 EnrReligQ1 (Gold) Teacher_13 Enrollment: 20 / 25 seats · Occupancy: 80.0%

Hover any cell for room · period · grade/course/section · teacher · enrollment/capacity · occupancy %.

6. Metric Analysis

Metrics computed for this pilot:

Metric	Question it answers	Formula / notes
ATU — Average Time Utilization	How often is this room scheduled?	Scheduled hrs ÷ available hrs, Periods 2–5
ASO — Average Seat Occupancy	When sessions run, how full is the room?	Duration-weighted enrollment ÷ room capacity
CSUI — Combined Space Utilization Index	How productively is this room used overall?	ATU × ASO composite
SER — Space Elasticity Ratio	Does this room’s enrollment range fit its capacity?	Enrollment range vs. capacity; quartile-based labels
RER — Room Exclusivity Rate	How much of the MS footprint does the division control directly?	Exclusive rooms ÷ total MS rooms
PDR — Peak Demand Ratio	Is scheduling load evenly spread across periods, or concentrated at peak?	Peak-period sessions ÷ mean sessions per period

Full metric definitions, non-computed metrics, and data pipeline details are in the technical provenance document.

6.1 ATU — Average Time Utilization

ATU = hrs_wk_scheduled ÷ hrs_wk_available × 100
Denominator reflects available instructional time, Periods 2–5 only. Shared-room denominators are adjusted for confirmed cross-division usage. ATU and ASO for shared rooms reflect Middle School periods only.
Benchmark: ≥75% Optimised | 60–74% Healthy | 30–59% Review | <30% Action needed
School distribution: (N=15): 25th pctile = 41.0% | Median = 50.0% | 75th pctile = 50.0% | SD = 10.9%.
The In-School Distribution column shows each room’s rank within this school only — not against an external benchmark. ‘Top 25%’ means the room scores above the 75th percentile of MS rooms; ‘Bottom 25%’ means it falls below the 25th percentile.

Table 2: ATU by room — scheduled vs. available hours, Periods 2–5, Q1, Academic Year.
Room	Type	Ownership	Sched hrs/wk	Avail hrs/wk	ATU %	Benchmark	In-School Distribution
Seminar Room	Classroom	exclusive	14.58	23.33	62.5	Healthy (60–74%)	Top 25%
Rm 202	Classroom	exclusive	13.12	23.33	56.3	Review (30–59%)	Top 25%
Rm 209	Classroom	exclusive	13.12	23.33	56.3	Review (30–59%)	Top 25%
Lab 101	Science Lab	exclusive	11.67	23.33	50.0	Review (30–59%)	Median–75th pctile
Rm 204	Classroom	exclusive	11.67	23.33	50.0	Review (30–59%)	Median–75th pctile
Rm 206	Classroom	exclusive	11.67	23.33	50.0	Review (30–59%)	Median–75th pctile
Rm 210	Classroom	exclusive	11.67	23.33	50.0	Review (30–59%)	Median–75th pctile
Studio A	Specialist	shared_w_school	11.67	23.33	50.0	Review (30–59%)	Median–75th pctile
Studio C	Specialist	shared_w_school	10.21	23.33	43.8	Review (30–59%)	25th pctile–Median
Rm 203	Classroom	shared_w_Gr5	8.75	20.41	42.9	Review (30–59%)	25th pctile–Median
Rm 208	Classroom	shared_w_Gr5	8.75	20.41	42.9	Review (30–59%)	25th pctile–Median
Rm 201	Classroom	shared_w_Gr5	8.75	22.33	39.2	Review (30–59%)	Bottom 25%
Rm 207	Classroom	shared_w_Gr5	5.83	17.50	33.3	Review (30–59%)	Bottom 25%
Rm 205	Classroom	exclusive	5.83	23.33	25.0	Action needed (<30%)	Bottom 25%
Studio B	Specialist	shared_w_school	5.83	23.33	25.0	Action needed (<30%)	Bottom 25%

No room reaches the ≥75% ATU target. The Seminar Room is the only room above the 60% floor, at 62.5%. All others fall below 60%; Rm 205 and Studio B are the lowest at 25%. The MS-exclusive average is 50%. Four periods (P2–P5) set the ceiling: 280 min of potential scheduling time per day, but most rooms host fewer than 4 sections. Grade 5 shared rooms show similarly low ATU; their denominators are adjusted downward but scheduling frequency remains low.

Note: the median equals Q3 (both 50.0%) because five rooms share an identical scheduled load of 11.67 hrs/wk, collapsing the upper-middle of the distribution. The SD of 10.9% reflects spread at the tails (two rooms at 25% ATU and one at 62.5%) rather than genuine variance across the majority of rooms.

⚠ Note 6.1 — ATU denominator excludes Period 1; shared-room denominators adjusted for Grade 5 usage. Denominator reflects available instructional time, Periods 2–5 only. Shared-room denominators are adjusted for confirmed cross-division usage. ATU and ASO for shared rooms reflect Middle School periods only.

6.2 ASO — Average Seat Occupancy

ASO = (Duration-Weighted Average Enrollment ÷ Room Capacity) × 100
Enrollment weighted by section duration (minutes): a 70-min session counts twice as much as a 35-min session, reflecting actual seat-time consumed rather than a simple average across sessions. For example, a room hosting 25 students for 70 min and 10 students for 35 min has a weighted average of (25×70 + 10×35) ÷ (70+35) = 20 students (closer to the longer session). Capacity from confirmed room inventory (sqft ÷ applicable regulatory standard by room type).
Benchmark: 60–75% target | <50% oversized | >85% crowded
School distribution: (N=15): 25th pctile = 60.7% | Median = 68.3% | 75th pctile = 81.7% | SD = 18.4%.
The In-School Distribution column shows each room’s rank within this school only — not against an external benchmark. ‘Top 25%’ means the room scores above the 75th percentile of MS rooms; ‘Bottom 25%’ means it falls below the 25th percentile.

Table 3: ASO by room — duration-weighted enrollment vs. capacity, Q1 2025–26.
Room	Type	Capacity	Enroll (wtd avg)	ASO %	Benchmark	In-School Distribution
Seminar Room	Classroom	19	21.6	98.9	Full (≥75%)	Top 25%
Rm 207	Classroom	26	27.6	92.3	Full (≥75%)	Top 25%
Studio A	Specialist	26	25.0	83.7	Full (≥75%)	Top 25%
Rm 210	Classroom	24	23.0	83.3	Full (≥75%)	Top 25%
Rm 204	Classroom	30	27.6	80.0	Full (≥75%)	Median–75th pctile
Rm 205	Classroom	30	27.6	80.0	Full (≥75%)	Median–75th pctile
Lab 101	Science Lab	29	23.0	69.0	Moderate (50–74%)	Median–75th pctile
Studio B	Specialist	30	23.6	68.3	Moderate (50–74%)	Median–75th pctile
Studio C	Specialist	25	19.2	66.9	Moderate (50–74%)	25th pctile–Median
Rm 206	Classroom	30	23.0	66.7	Moderate (50–74%)	25th pctile–Median
Rm 209	Classroom	24	17.2	62.5	Moderate (50–74%)	25th pctile–Median
Rm 203	Classroom	30	20.3	58.9	Moderate (50–74%)	Bottom 25%
Rm 201	Classroom	29	19.5	58.6	Moderate (50–74%)	Bottom 25%
Rm 202	Classroom	28	13.8	42.9	Low (25–49%)	Bottom 25%
Rm 208	Classroom	24	7.7	27.8	Low (25–49%)	Bottom 25%

The ASO distribution splits the MS portfolio into two opposite groups: rooms consistently filled to or past rated capacity, and rooms running small classes relative to room size. The MS-exclusive average of 72.9% sits within the 60–75% target band but conceals both extremes. The Seminar Room (98.9% ASO) and Rm 207 (92.3%) are both in the crowding zone, but they are not equivalent: Rm 207 approaches its rated ceiling; the Seminar Room exceeds it. Peak MS enrollment reaches 24.1 students against a rated capacity of 19. That distinction matters because the Seminar Room’s constraint is physical: its 626 sqft footprint caps capacity at 19 seats (regulatory standard), and no scheduling change raises that ceiling. At the other extreme, Rm 208 (27.8%) and Rm 202 (42.9%) are structurally low-occupancy: classes assigned to these rooms are small relative to room size.

6.3 CSUI — Combined Space Utilization Index

CSUI = ATU (decimal) × ASO (decimal)
Composite productivity indicator combining time and seat utilization.
Benchmark: >0.50 (50%) strong | 0.30–0.50 moderate | <0.30 weak
School distribution: (N=15): 25th pctile = 23.6% | Median = 30.7% | 75th pctile = 37.6% | SD = 12.3%.
The In-School Distribution column shows each room’s rank within this school only — not against an external benchmark. ‘Top 25%’ means the room scores above the 75th percentile of MS rooms; ‘Bottom 25%’ means it falls below the 25th percentile.

ATU caps CSUI for most rooms: with the majority below 50% time utilization, the ATU × ASO product rarely clears the 50% threshold even at high seat fill. Seminar Room is the exception: near-capacity enrollment pushes its CSUI to 61.8% despite moderate scheduling frequency.

Table 4: CSUI by room — ATU × ASO composite, with projected CSUI at 75% ATU target.
Room	ATU %	ASO %	CSUI %	CSUI @ 75% ATU	Benchmark	In-School Distribution
Seminar Room	62.5	98.9	61.8	74.2	Strong	Top 25%
Studio A	50.0	83.7	41.9	62.8	Moderate	Top 25%
Rm 210	50.0	83.3	41.6	62.5	Moderate	Top 25%
Rm 204	50.0	80.0	40.0	60.0	Moderate	Top 25%
Rm 209	56.3	62.5	35.2	46.9	Moderate	Median–75th pctile
Lab 101	50.0	69.0	34.5	51.7	Moderate	Median–75th pctile
Rm 206	50.0	66.7	33.4	50.0	Moderate	Median–75th pctile
Rm 207	33.3	92.3	30.7	69.2	Moderate	Median–75th pctile
Studio C	43.8	66.9	29.3	50.2	Weak	25th pctile–Median
Rm 203	42.9	58.9	25.3	44.2	Weak	25th pctile–Median
Rm 202	56.3	42.9	24.2	32.2	Weak	25th pctile–Median
Rm 201	39.2	58.6	23.0	44.0	Weak	Bottom 25%
Rm 205	25.0	80.0	20.0	60.0	Weak	Bottom 25%
Studio B	25.0	68.3	17.1	51.2	Weak	Bottom 25%
Rm 208	42.9	27.8	11.9	20.9	Weak	Bottom 25%

The MS division average CSUI of 31.3% sits at the lower end of the 30–50% range. Only Seminar Room clears the 50% threshold (61.8%). The CSUI @ 75% ATU column is a mechanical benchmark scenario: it holds ASO constant and shows where each room would land if scheduling frequency alone reached the ATU target.

6.4 SER — Space Elasticity Ratio

SER 3×3 label: rooms classified by floor band (Min occ%) × peak band (Peak occ%), each split at Q1 and Q3 of the school’s own distribution. Labels: Chronically sparse | Underutilized | Volatile | Sparse peak | Moderate | Under pressure | Well utilized | At/over capacity.
Min occ% = enroll_min / Room_Capacity × 100 (occupancy at lowest observed enrollment) — (N=15): 25th pctile = 49.1% | Median = 65.5% | 75th pctile = 79.1% | SD = 21.3%.
Peak occ% = enroll_max / Room_Capacity × 100 (occupancy at highest observed enrollment) — (N=15): 25th pctile = 70.0% | Median = 80.0% | 75th pctile = 89.6% | SD = 19.2%.
Headroom% = (Room_Capacity − enroll_max) / Room_Capacity × 100 (slack at peak; negative = over capacity)
Occ range% = Peak occ% − Min occ%
Column colors for Min occ% and Peak occ% show each room’s rank within this school: green = top 25%, yellow = middle, red = bottom 25%.

SER dot plot. Each horizontal line captures a room's enrollment range: minimum occupancy rate (open dot) to peak occupancy rate (filled dot). Orange dashed line = Q1 of floor occ% (low floor threshold); green dashed line = Q3 of peak occ% (high peak threshold).

Figure 1: SER dot plot. Each horizontal line captures a room’s enrollment range: minimum occupancy rate (open dot) to peak occupancy rate (filled dot). Orange dashed line = Q1 of floor occ% (low floor threshold); green dashed line = Q3 of peak occ% (high peak threshold).

Table 5: SER by room: enrollment range, headroom, and 3×3 label. **Floor bands** (Min occ%): low <49.1% | mid 49.1–79.1% | high >79.1%. **Peak bands** (Peak occ%): low <70.0% | mid 70.0–89.6% | high >89.6%. Sorted by headroom (tightest first).
		Combined (A+B)				A-Day		B-Day
Room	Capacity	Min occ%	Peak occ%	Occ range (pp)	Headroom%	N sec	Peak%	N sec	Peak%	Label
Seminar Room	19	78.9	110.5	31.6	-10.5	4	110.5	1	78.9	Under pressure (mid floor, high peak)
Studio A	26	73.1	107.7	34.6	-7.7	2	76.9	2	107.7	Under pressure (mid floor, high peak)
Rm 207	26	92.3	92.3	0.0	7.7	—	—	2	92.3	At/over capacity (high floor, high peak)
Rm 209	24	37.5	91.7	54.2	8.3	3	91.7	3	91.7	Volatile (low floor, high peak)
Rm 210	24	79.2	87.5	8.3	12.5	2	83.3	2	87.5	Well utilized (high floor, mid peak)
Rm 204	30	80.0	80.0	0.0	20.0	2	80	2	80	Well utilized (high floor, mid peak)
Rm 205	30	80.0	80.0	0.0	20.0	2	80	—	—	Well utilized (high floor, mid peak)
Studio C	25	52.0	80.0	28.0	20.0	1	52	3	80	Moderate (mid floor, mid peak)
Lab 101	29	65.5	72.4	6.9	27.6	2	69	2	72.4	Moderate (mid floor, mid peak)
Rm 202	28	21.4	71.4	50.0	28.6	3	71.4	3	71.4	Underutilized (low floor, mid peak)
Rm 206	30	63.3	70.0	6.7	30.0	2	70	2	66.7	Moderate (mid floor, mid peak)
Rm 203	30	50.0	70.0	20.0	30.0	2	70	1	50	Moderate (mid floor, mid peak)
Studio B	30	66.7	70.0	3.3	30.0	—	—	2	70	Moderate (mid floor, mid peak)
Rm 201	29	48.3	69.0	20.7	31.0	2	69	2	69	Chronically sparse (low floor, low peak)
Rm 208	24	25.0	29.2	4.2	70.8	2	29.2	1	29.2	Chronically sparse (low floor, low peak)

Four enrollment patterns emerge:

Seminar Room and Studio A are labeled Under pressure (mid floor, high peak) and carry negative headroom: enrollment exceeds rated capacity at peak (-10.5% and -7.7% respectively). Rm 207 is labeled At/over capacity by the school-relative framework, ranking highest on both floor and peak occupancy within this school, though headroom stays positive at 7.7%.
Rm 209 is the only room labeled Volatile: peak reaches 91.7% on some sessions and falls to 37.5% on others, a 54-point swing.
Rm 208 and Rm 201 are labeled Chronically sparse: both floor and peak fall in the bottom quartile of the school’s distribution. Rm 208 is the more extreme case; even its peak session (29.2%) barely clears 30%. Rm 202 is labeled Underutilized.
The remaining eight rooms divide into two groups: five (Lab 101, Rm 203, Rm 206, Studio B, Studio C) are labeled Moderate, with occupancy in the middle band on both floor and peak; three (Rm 204, Rm 205, Rm 210) are labeled Well utilized, with floor occupancy in the top quartile. All eight carry positive headroom.

⚠ Note 6.4 — SER labels are school-relative and based on a 2-week enrollment range. enroll_min and enroll_max reflect variation observed within the Q1 2-week schedule grid, not year-over-year enrollment swings. The Underutilized and Under pressure labels use this school’s own quartile distribution: rooms at or below the 25th percentile of min occ% are labelled Underutilized; rooms at or above the 75th percentile of peak occ% are labelled Under pressure. Because this analysis covers 15 rooms, each quartile boundary spans 3–4 rooms — a single room reclassification shifts the cutoff. Treat labels as directional signals, not exact grades. The binary ±30% pass/fail threshold is deferred pending further review.

6.4a SER — Upper and Lower bounds

An alternative framing splits the SER test into two separate bounds rather than a combined pass/fail:

Upper Bound: enroll_max × 1.3 ≤ Room_Capacity (Can the room absorb a 30% surge in its busiest section?)

Lower Bound: (enroll_min × 0.7) / Room_Capacity ≥ 0.50 (Does the room stay at least 50% full even if its thinnest section shrinks 30%?)

The 2×2 contingency table below disaggregates rooms by which bound(s) they fail:

	Passes lower bound	Fails lower bound
Passes upper bound	(none)	Lab 101, Rm 201, Rm 202, Rm 203, Rm 206, Rm 208, Studio B
Fails upper bound	Rm 204, Rm 205, Rm 207, Rm 210, Studio A, Seminar Room	Rm 209, Studio C

Across all 15 in-scope rooms, most fail at least one bound: the lower bound (trough too thin) or both.

6.5 PDR — Peak Demand Ratio

PDR = blocks at peak period ÷ mean blocks per period (by day type)
Counting unit: 35-min blocks (the smallest schedulable unit). A 70-min session = 2 blocks; a 35-min half-period = 1 block. Computed on the canonical A-day and B-day (Week 1) only. Gym excluded; Grade 5 sessions in shared rooms excluded.

PDR result — no scheduling concentration A-day PDR: 1.16 | B-day PDR: 1.12
Both A-day and B-day values are close to 1.0, indicating even distribution of sessions across Periods 2–5. No single period carries a disproportionate share of MS room use. The ATU shortfall is a scheduling frequency problem, not a within-day distribution problem.

6.6 RER — Room Exclusivity Rate

RER = n_exclusive ÷ n_total_ms_rooms × 100
Grouping unit: MS division. MS-only rooms count toward the exclusive numerator; Grade 5 cross-division rooms and whole-school specialist rooms (Studio A, Studio B, Studio C) are included in the denominator but not the numerator. See Section 7 for the Strings classroom note.
Answers: what fraction of the rooms MS uses are under exclusive MS scheduling control?

Table 6: RER — room count by ownership category.
Ownership	N rooms	% of MS rooms	Note
Exclusive (MS)	8	53.3	MS-only — full metrics apply
Shared w/ Grade 5	4	26.7	Grade 5 cross-division — ATU denominator adjusted
Shared w/ School	3	20.0	Whole-school specialist — MS metrics are partial

RER = 53.3% (8 exclusive / 15 total MS rooms)

At 53%, MS has exclusive scheduling control over 8 of 15 rooms in its footprint. The remaining 7 carry attribution caveats: 4 are shared with Grade 5 with documented hour deductions; 3 are whole-school specialist rooms (Studio A, Studio B, Studio C) with no divisional hour allocation available. No published benchmark for RER exists. The 53% rate reflects the typical K–8 pattern of shared specialist facilities; it marks the extent of cross-division coordination required, not a performance gap. Metric accuracy for those 7 rooms is also lower: no complete cross-division schedule was available, so the figures reflect data gaps as much as actual sharing patterns.

6.7 Cross-Metric Analysis

Three patterns stand out across the four metrics:

Seminar Room is the most heavily used room in the MS portfolio, scheduled 62.5% of available time and running at 98.9% occupancy when in session. It is the only room already past its rated capacity at peak (headroom -10.5%).
Rm 205 and Studio B tell the opposite story. Both are scheduled only 25% of the time, but when sessions run they fill to 80% and 68.3% respectively. The gap is scheduling frequency, not class size.
Rm 208 is the exception on both dimensions: moderate scheduling (42.9% ATU) but very low occupancy when in use (27.8% ASO), giving it the lowest CSUI in the portfolio.

The cross-tabs below assign each room to a quadrant and show which rooms MS can act on independently.

Cross-metric heatmap — ATU, ASO, and CSUI each scale from pale (weakest) to dark green (strongest); Headroom uses a diverging scale: red for over capacity, white at break-even, dark green for positive headroom. Rooms sorted top-to-bottom by CSUI.

Figure 2: Cross-metric heatmap — ATU, ASO, and CSUI each scale from pale (weakest) to dark green (strongest); Headroom uses a diverging scale: red for over capacity, white at break-even, dark green for positive headroom. Rooms sorted top-to-bottom by CSUI.

No room reaches the ATU ≥75% target; the entire portfolio sits in the Low ATU half of the grid.

ATU × ASO

The table below places each room in an ATU × ASO quadrant. ASO splits at 60% (target band floor); ATU splits at 60% (Healthy benchmark floor).

	Seat Occupancy (ASO)
ATU	ASO ≥60%	ASO <60%
High ATU (≥60%)	Seminar Room	—
Low ATU (<60%)	Rm 207, Studio A, Rm 210, Rm 204, Rm 205, Lab 101, Studio B, Studio C, Rm 206, Rm 209	Rm 203, Rm 201, Rm 202, Rm 208

SER label × ATU

SER label	High ATU (≥60%)	Low ATU (<60%)
Under pressure	Seminar Room	Studio A
At/over capacity	—	Rm 207
Volatile	—	Rm 209
Well utilized	—	Rm 204, Rm 205, Rm 210
Moderate	—	Lab 101, Rm 203, Rm 206, Studio B, Studio C
Underutilized	—	Rm 202
Chronically sparse	—	Rm 201, Rm 208

Low ATU + Under pressure is the key disambiguation cell: Rm 207 appears crowded at peak but is rarely scheduled; the constraint is scheduling frequency, not physical capacity. Seminar Room is the only High ATU + Under pressure room: a genuine physical constraint that no scheduling change resolves.

SER label × Ownership

SER label	Exclusive (MS)	Shared w/ School	Shared w/ Grade 5
Under pressure	Seminar Room	Studio A	—
At/over capacity	—	—	Rm 207
Volatile	Rm 209	—	—
Well utilized	Rm 204, Rm 205, Rm 210	—	—
Moderate	Lab 101, Rm 206	Studio B, Studio C	Rm 203
Underutilized	Rm 202	—	—
Chronically sparse	—	—	Rm 201, Rm 208

Ownership determines actionability: exclusive rooms with non-Moderate SER labels are under full MS scheduling control; shared rooms require cross-division coordination before any change is possible.

6.8 Metrics Not Computed in This Pilot

PSMI — Program–Space Match Index (not scored). A formal score cannot be computed from the MS-only schedule grid: it would exclude Lower School sessions in these rooms and structurally bias any index derived from MS data alone. Qualitative finding in §7.

SSD — School Schedule Density (not computed). Requires a complete room inventory across all divisions. Only the MS P2–P5 schedule is available from this analysis.

7. Shared Specialist Rooms: Program–Space Match

Three specialist rooms—Studio A, Studio B, and Studio C—are shared across divisions; ATU and ASO metrics below reflect MS P2–P5 use only and substantially understate their actual occupancy during the full school day. Studio D is excluded from this analysis: no Grade 6–8 instructional sessions appear during Periods 2–5.

Table 7: Specialist rooms: MS-only utilization (Periods 2–5)
Metric	Studio A	Studio B	Studio C
MS scheduled hrs/wk	11.7	5.8	10.2
ATU (MS only)	50.0%	25.0%	43.8%
ASO (MS only)	83.7%	68.3%	66.9%

Program–Space Match (PSMI — qualitative). Each specialist room is assigned to and used by the teacher whose discipline it was designed for: Studio A is used for visual arts, Studio B for performing arts, and Studio C for theology. Classroom observations and schedule review confirm that no specialist room is being repurposed for general instruction. This alignment—where instructional space matches its intended program—is the core concern PSMI is designed to flag. No misalignment is present in this sample.

8. Data Notes

Note 8.1 — Enrollment data reflects the Q1 2025-26 SIS snapshot Enrollment figures reflect the Q1 SIS export (January 21, 2026). For ongoing monitoring, refresh the SIS export at each quarter end.

Note 8.2 — Rm 201, Rm 203, Rm 207, Rm 208: Grade 5 sharing reduces available time Four rooms share time with Grade 5. ATU denominators are adjusted downward for each; the adjustments range from 1 to 5.8 hrs/wk depending on the room. Methodology details are in the technical provenance document.

Note 8.3 — Seminar Room is over capacity at peak; division allocation unresolved Seminar Room has a confirmed rated capacity of 19 seats. At peak MS enrollment, occupancy reaches 24.1 students, exceeding rated capacity (headroom -10.5%). The capacity constraint is structural: at 626 sqft, the regulatory standard (30 sqft/student) yields a fixed 19-seat ceiling. ASO figures reflect MS schedule sessions only. Whether the room carries additional non-MS use is unconfirmed.

Greenfield Academy Space Utilization — Pilot Analysis | SpaceLogic Analytics | Updated: 2026-04-08