← All proof trees · CHRISTOPHER COLUMBUS CHARTER

1. 1
   What you see% Male

   51.0%

   the share of the school's students who are male.

   vs. peers

   64th percentile

   vs. citywide

   46th 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 330 default-included schools with a value for this metric, year, and subgroup, this school has a higher value than 150. Midrank rule: (150 + 0/2) / (330 − 1) = 0.456.Stored: 0.456. ✓ 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 Elementary-Middle / lottery / charter schools; 22 of 22 peers have a value this year. This school is above 14 of them. Midrank: (14 + 0/2) / (23 − 1) = 0.636; stored 0.636. ✓ matches

   The peers and their values (22)

   Peer school	Value
   NORTHWOOD CHARTER SCHOOL	55.0%
   RUSSELL BYERS CHARTER SCHOOL	53.7%
   LAB SCH OF COMMUNICAT'N & LANG	53.3%
   GREEN WOODS CHARTER SCHOOL	53.1%
   KIPP PHILADELPHIA CHARTER	52.4%
   DE HOSTOS CHARTER SCHOOL	52.0%
   ANTONIA PANTOJA CHARTER SCHOOL	51.6%
   HARAMBEE INSTITUTE OF SCIENCE	51.0%
   FRANKLIN TOWNE ELEMENTARY	50.7%
   DISCOVERY CHARTER SCHOOL	50.4%
   WISSAHICKON CHARTER SCHOOL	50.2%
   UNIVERSAL INSTITUTE	49.9%
   KEYSTONE ACADEMY CHARTER	49.8%
   FOLK ARTS CULTURAL TREASURES	49.7%
   INDEPENDENCE CHARTER WEST	49.6%
   WEST OAK LANE CHARTER SCHOOL	49.4%
   INDEPENDENCE CHARTER SCHOOL	48.6%
   ALLIANCE FOR PROGRESS CHARTER	47.8%
   PAN AMERICAN ACADEMY CHARTER	47.5%
   GLOBAL LEADERSHIP ACADEMY	47.5%
   AD PRIMA CHARTER SCHOOL	45.2%
   SOUTHWEST LEADERSHIP ACADEMY	43.7%

   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: % Male

3. 3
   The stored cellThe stored cell

   table

   philly_school_year_metrics

   value

   50.9501187648456

   denominator

   null (not published)

   suppressed

   false

   citywide_percentile

   0.4559

   comparison_group_percentile

   0.6364

   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.

   Algorithms involved: School demographic shares from per-grade counts