← All proof trees

1. 1
   How it was computedvalue = published 'Average Daily Attendance (YTD)'

   1. Read the district's ADA CSV; keep directory schools; store the published rate (all students only).

   Algorithms applied downstream: Citywide and peer-group percentiles, Peer groups: 40 nearest neighbors on demographics

2. 2
   The load that wrote it1 data load wrote this metric

   Loaded	Source file	Years	Cells	Suppressed	File hash	Commit
   2026-06-04	sdp_attendance_ada_school	2020-21, 2021-22, 2022-23, 2023-24, 2024-25	1,072	0	04e0893c5f84…	f75e3313

   The hash identifies the exact file version read; the commit identifies the exact code. Both are recorded at load time.

   Evidence: sdp_attendance_and_suspensions.ts

3. 3
   The publisher's fileAverage daily attendance, by school and year

   Average daily attendance, by school and year — School District of Philadelphia (Performance Office). Each school's year-to-date average daily attendance rate (share of enrolled days attended), all students only.

   format

   CSV

   join key

   ULCS Code

   landing page

   https://opendataphilly.org/datasets/sdp-school-performance/

   • District sector only.

   Evidence: source registry (sources.yaml) · sdp_attendance_ada_school: first-fetch findings

4. 4
   How it was checkedChecks: 0 passed, 1 not run

   • ○ not runNo separate base-case report; same loader and file family as attendance_rate_above_90
5. 5
   Assumptions & caveatsAssumptions and caveats

   No modeling assumptions — stored as published.

   Caveats

   • District-run schools only.
   • All-students figure only; no subgroups published.

To see the tree for one school’s number, click any dotted-underlined figure on a school, Outliers, or Movers page.