← All proof trees · GROVER WASHINGTON JR. MIDDLE

1. 1
   What you see% Economically Disadvantaged

   100.0%

   the share of the school's students recorded as economically disadvantaged.

   vs. peers

   56th percentile

   vs. citywide

   59th percentile

   unit

   percent

   direction

   neither direction is 'better'

2. 2
   How it was computedvalue = 100 × Σ group count / Σ enrollment across the school's grade rows

   1. Read the district's enrollment file (one row per school × grade).
   2. Sum counts across grades to the school level.
   3. Divide the group count by total enrollment to get a share; storing shares re-derived from counts (rather than averaging per-grade percentages) weights grades by their size.

   Citywide percentile, reconstructed right now

   Among 248 default-included schools with a value for this metric, year, and subgroup, this school has a higher value than 46 and ties 201. Midrank rule: (46 + 201/2) / (248 − 1) = 0.593.Stored: 0.593. ✓ matches

   How percentiles are computed · How peer groups are chosen

   Peer percentile, reconstructed right now

   Peer group: up to 40 of the demographically nearest schools among Middle / catchment / district schools; 9 of 9 peers have a value this year. This school is above 1 and ties 8 of them. Midrank: (1 + 8/2) / (10 − 1) = 0.556; stored 0.556. ✓ matches

   The peers and their values (9)

   Peer school	Value
   TILDEN MIDDLE SCHOOL	100.0%
   STETSON, JOHN B. MIDDLE SCOOL	100.0%
   WARREN G. HARDING MIDDLE SCH	100.0%
   GEN. LOUIS WAGNER MIDDLE SCH.	100.0%
   CASTOR GARDENS MIDDLE SCHOOL	100.0%
   BALDI MIDDLE SCHOOL	100.0%
   FELTONVILLE ARTS & SCIENCES	100.0%
   ROBERTO CLEMENTE MIDDLE SCHOOL	100.0%
   SCIENCE LEADERSHIP ACADEMY MS	83.0%

   Note: stored percentiles are computed by a batch script after loads; a difference from the live reconstruction means a newer load changed the comparison set and the batch has not been re-run.

   Evidence: metric tree: % Economically Disadvantaged

3. 3
   The stored cellThe stored cell

   table

   philly_school_year_metrics

   value

   100

   denominator

   null (not published)

   suppressed

   false

   citywide_percentile

   0.5931

   comparison_group_percentile

   0.5556

   source_load_id

   f4c317af-16df-4cfe-8454-7b9361cd81cd

   Evidence: data model overview

4. 4
   The load that wrote itWritten on 2026-06-03 by sdp_enrollment_demographics.ts

   source id

   sdp_enrollment_demographics_school_2024-25

   file URL

   https://cdn.philasd.org/offices/performance/Open_Data/School_Information/Enrollment_Demographics_School/2024-2025%20Enrollment%20&%20Demographics.csv

   SHA-256 of the file read

   80f169f31c3e31f7f7a4d84138a46caa45f9b16162208c5b02784349fb2f133dCopy hash

   bytes

   492,606

   year covered

   2024-25

   code commit

   63ddc08c2a63170cecb6e78b991559cef9aa3926

   To confirm you have the same file: download it from the URL above, then run shasum -a 256 <downloaded file> Copy command — the output should equal the hash above. If the publisher has since replaced the file, the hashes will differ, which is itself useful to know.

   Evidence: loader script · first-fetch findings for this file · source registry

5. 5
   The publisher's fileEnrollment & Demographics, 2024-25

   School District of Philadelphia. October 1 enrollment counts by school and grade, with counts by race/ethnicity, gender, economic disadvantage, English-learner status, and special education.

   format

   CSV (one row per school × grade)

   join key

   ULCS Code

   landing page

   https://opendataphilly.org/datasets/sdp-school-enrollment-and-demographics/

   • Economic disadvantage is recorded as 100% at most district schools (community-eligibility meal reporting), so it can't distinguish schools.
6. 6
   How it was checkedChecks: 0 passed, 1 not run

   • ○ not runNo base-case report yet for demographics (aggregation is arithmetic on published counts; see the algorithm page)
7. 7
   Assumptions & caveatsAssumptions and caveats

   • October 1 enrollment is the reference population for the whole school year.

   • 2024-25 only.
   • Recorded as exactly 100% at 188 of 216 district schools (community-eligibility meal reporting), so it cannot distinguish schools.
   • Published for district-run and contracted schools only — not for charters.

   Algorithms involved: School demographic shares from per-grade counts