← All proof trees · GLORIA CASAREZ ELEMENTARY SCHOOL

1. 1
   What you seeKeystone Literature proficiency

   17.0%

   the share of students scoring proficient or advanced on the Keystone Literature exam.

   vs. peers

   37th percentile

   vs. citywide

   21th percentile

   unit

   percent

   direction

   higher is better

2. 2
   How it was computedvalue = the state's published percentage for the school × subgroup, as-is

   1. Read the state's wide-format datafile: one row per Pennsylvania school, one column per measure × subgroup (e.g. PercentPersistentAttendance_Black).
   2. Keep Philadelphia rows by mapping the state's AUN + Schl codes to the district's ULCS code through the Master School List.
   3. Unpivot each recognized measure × subgroup column into one served cell; state suppression codes ('IS', '--', '*') are stored as suppressed.

   Citywide percentile, reconstructed right now

   Among 283 default-included schools with a value for this metric, year, and subgroup, this school has a higher value than 57 and ties 4. Midrank rule: (57 + 4/2) / (283 − 1) = 0.209.Stored: 0.209. ✓ 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 / catchment / district schools; 34 of 40 peers have a value this year. This school is above 12 and ties 1 of them. Midrank: (12 + 1/2) / (35 − 1) = 0.368; stored 0.368. ✓ matches

   The peers and their values (34)

   Peer school	Value
   ANNE FRANK SCHOOL	57.0%
   WATSON COMLY SCHOOL	51.7%
   SAMUEL POWEL SCHOOL	50.0%
   FOX CHASE SCHOOL	40.0%
   RHAWNHURST SCHOOL	35.6%
   J. HAMPTON MOORE SCHOOL	33.8%
   KENNEDY C. CROSSAN SCHOOL	32.6%
   JOHN B. KELLY SCHOOL	32.5%
   JOHN MOFFET SCHOOL	32.3%
   JAMES LOGAN SCHOOL	29.8%
   HENRY W. LAWTON SCHOOL	29.4%
   ROWEN SCHOOL	23.9%
   HOWE ACADEMICS PLUS SCHOOL	23.8%
   SOLOMON SOLIS-COHEN SCHOOL	22.9%
   THOMAS G. MORTON SCHOOL	22.8%
   JAMES R. LOWELL SCHOOL	22.5%
   ELLWOOD SCHOOL	21.7%
   JOSEPH W. CATHARINE SCHOOL	21.5%
   STEPHEN GIRARD SCHOOL	21.5%
   JOSEPH PENNELL ELEMENTARY	17.6%
   JOHN M. PATTERSON SCHOOL	17.4%
   FELTONVILLE INTERMEDIATE	17.0%
   JOHN MARSHALL SCHOOL	16.9%
   EDWIN FORREST SCHOOL	16.7%
   RICHMOND SCHOOL	16.7%
   JOHN H. WEBSTER SCHOOL	13.7%
   RICHARD WRIGHT SCHOOL	12.4%
   LAURA H. CARNELL SCHOOL	12.4%
   JAMES J. SULLIVAN SCHOOL	12.0%
   CAYUGA SCHOOL	10.5%
   WILLIAM CRAMP SCHOOL	10.3%
   FRANCES E. WILLARD SCHOOL	10.2%
   LEWIS ELKIN SCHOOL	9.4%
   ALEXANDER MCCLURE SCHOOL	5.1%

   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: Keystone Literature proficiency

3. 3
   The stored cellThe stored cell

   table

   philly_school_year_metrics

   value

   17

   denominator

   null (not published)

   suppressed

   false

   citywide_percentile

   0.2092

   comparison_group_percentile

   0.3676

   source_load_id

   2fdcb9ea-d4af-4a48-a7cf-a8e6166696b3

   Evidence: data model overview

4. 4
   The load that wrote itWritten on 2026-09-08 by futurereadypa_performance.ts

   source id

   futurereadypa_performance_2023-24

   file URL

   https://futurereadypa.org/home/getdatafile?id=49

   SHA-256 of the file read

   89219f7a7ffbc6adc14f54e87f2872ab04ce12a9e0749c448cf54998e4930e90Copy hash

   bytes

   4,861,549

   year covered

   2023-24

   code commit

   c19ea6ec845c65bcc40eb49644be1c7e67b05f25

   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 fileFuture Ready PA Index datafile, 2023-24

   Pennsylvania Department of Education (Future Ready PA Index). Same structure as the 2024-25 file.

   format

   XLSX (wide)

   join key

   AUN + Schl → ULCS

   landing page

   https://futurereadypa.org/Home/DataFiles

   • Same as 2024-25.
6. 6
   How it was checkedChecks: 0 passed, 1 not run

   • ○ not runBase case against the state file not yet run for this metric (the loader is shared with keystone_algebra_proficiency, whose SDP-side base case passed)
7. 7
   Assumptions & caveatsAssumptions and caveats

   • The state's AUN + Schl → ULCS mapping from the 2024-25 Master School List is correct. State rows for schools not in that directory — district schools that closed before 2024-25 — are not loaded, so every year of state data is a survivor-only panel; cyber charters have their own AUNs and are outside the district's directory.
   • Where two directory schools share a state code (a school and its Continuation Academy), the state's single row belongs to the main school (deterministic rule; the full absenteeism QA lists every shared code).

   • The state publishes no student counts for most measures, so served cells carry no denominator.
   • Served from both the district's and the state's files; check the cell's load record.

   Algorithms involved: Reading the state's wide-format datafile, Citywide and peer-group percentiles, Peer groups: 40 nearest neighbors on demographics