← All proof trees · LANKENAU HIGH SCHOOL
% Black — LANKENAU HIGH SCHOOL, 2024-25
The share of the school's students who are Black.
Identifiers
school code 6540 · metric key pct_black · year 2024-25 · subgroup ALL · population cut n/a
- 1What you see% Black
87.3%
the share of the school's students who are Black.
- vs. peers
- 77th percentile
- vs. citywide
- 69th percentile
- unit
- percent
- direction
- neither direction is 'better'
- 2How it was computedvalue = 100 × Σ group count / Σ enrollment across the school's grade rows
- Read the district's enrollment file (one row per school × grade).
- Sum counts across grades to the school level.
- 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 227. Midrank rule: (227 + 0/2) / (330 − 1) = 0.690.Stored: 0.690. ✓ matches
Peer percentile, reconstructed right now
Peer group: up to 40 of the demographically nearest schools among High / selective / district schools; 13 of 13 peers have a value this year. This school is above 10 of them. Midrank: (10 + 0/2) / (14 − 1) = 0.769; stored 0.769. ✓ matches
The peers and their values (13)
Peer school Value MOTIVATION HIGH SCHOOL 95.5% PARKWAY-NORTHWEST HIGH SCHOOL 90.4% PARKWAY WEST HIGH SCHOOL 89.4% PHILA HIGH SCHOOL FOR GIRLS 66.6% PARKWAY C.C. MIDDLE COLLEGE 66.1% W. B. SAUL HIGH SCHOOL 64.4% FRANKLIN LEARNING CENTER 50.3% CREATIVE AND PERFORMING ARTS 50.0% WILLIAM W. BODINE HIGH SCHOOL 39.5% SCIENCE LEADERSHIP ACADEMY 28.9% ACADEMY AT PALUMBO 25.0% ARTS ACADEMY AT BENJAMIN RUSH 24.7% CENTRAL HIGH SCHOOL 22.5% 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: % Black
- 3The stored cellThe stored cell
- table
- philly_school_year_metrics
- value
- 87.280701754386
- denominator
- null (not published)
- suppressed
- false
- citywide_percentile
- 0.6900
- comparison_group_percentile
- 0.7692
- source_load_id
- f4c317af-16df-4cfe-8454-7b9361cd81cd
Evidence: data model overview
- 4The load that wrote itWritten on 2026-06-03 by sdp_enrollment_demographics.ts
- source id
- sdp_enrollment_demographics_school_2024-25
- SHA-256 of the file read
- 80f169f31c3e31f7f7a4d84138a46caa45f9b16162208c5b02784349fb2f133d
- 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>— 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
- 5The 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
- Economic disadvantage is recorded as 100% at most district schools (community-eligibility meal reporting), so it can't distinguish schools.
- 6How 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)
- 7Assumptions & 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
The same metric for this school, every year and cut
| Year | Subgroup | Cut | Value |
|---|---|---|---|
| 2024-25 | All students | no population cut | 87.3% |