PhiladelphiaWorking-analysis statistic

District-wide months, including 2025-26

The within-month below-90 share, district-wide, each month of each school year, plus a September–March average.

1
How it was computed100 − published within-month 90%+ share; Sep–Mar average weighted by monthly student counts
universe
District-level monthly file, all students
packet block
district_monthly
Uses: Chronic absenteeism as 100 minus the 90%-attendance share
Evidence: generator — search "// 9 — district monthly"
2
What went inInputs
- sdp_attendance_90_district_monthly — read directly from the publisher’s file (District-wide monthly attendance — % with 90%+ attendance within the month). findings

The generated fileThe committed data file

Generated 2026-09-08 by one script from the inputs above; the page renders only from this file.

This block’s raw values (JSON)

{
 "2020-21": {
  "Sep": {
   "pct_below_90": 27.32,
   "n_students": 117638
  },
  "Oct": {
   "pct_below_90": 22.35,
   "n_students": 118663
  },
  "Nov": {
   "pct_below_90": 27.1,
   "n_students": 118458
  },
  "Dec": {
   "pct_below_90": 26.95,
   "n_students": 118490
  },
  "Jan": {
   "pct_below_90": 26.31,
   "n_students": 118458
  },
  "Feb": {
   "pct_below_90": 27.72,
   "n_students": 118429
  },
  "Mar": {
   "pct_below_90": 20.72,
   "n_students": 118415
  },
  "Apr": {
   "pct_below_90": 24.37,
   "n_students": 118409
  },
  "May": {
   "pct_below_90": 32.88,
   "n_students": 118407
  },
  "sep_mar_weighted": 25.4934,
  "sep_nov_weighted": 25.5841,
  "dec_feb_weighted": 26.9933
 },
 "2021-22": {
  "Sep": {
   "pct_below_90": 30.94,
   "n_students": 112503
  },
  "Oct": {
   "pct_below_90": 23.17,
   "n_students": 112769
  },
  "Nov": {
   "pct_below_90": 38.2,
   "n_students": 112902
  },
  "Dec": {
   "pct_below_90": 42.44,
   "n_students": 112670
  },
  "Jan": {
   "pct_below_90": 46.91,
   "n_students": 112370
  },
  "Feb": {
   "pct_below_90": 38.44,
   "n_students": 112115
  },
  "Mar": {
   "pct_below_90": 31.17,
   "n_students": 112186
  },
  "Apr": {
   "pct_below_90": 36.06,
   "n_students": 111711
  },
  "May": {
   "pct_below_90": 47.45,
   "n_students": 111879
  },
  "Jun": {
   "pct_below_90": 46.3,
   "n_students": 105493
  },
  "sep_mar_weighted": 35.8928,
  "sep_nov_weighted": 30.7728,
  "dec_feb_weighted": 42.5997
 },
 "2022-23": {
  "Sep": {
   "pct_below_90": 30.52,
   "n_students": 111257
  },
  "Oct": {
   "pct_below_90": 36.06,
   "n_students": 112466
  },
  "Nov": {
   "pct_below_90": 42.83,
   "n_students": 112545
  },
  "Dec": {
   "pct_below_90": 41.18,
   "n_students": 112437
  },
  "Jan": {
   "pct_below_90": 38.02,
   "n_students": 112470
  },
  "Feb": {
   "pct_below_90": 42.13,
   "n_students": 112499
  },
  "Mar": {
   "pct_below_90": 33.49,
   "n_students": 112508
  },
  "Apr": {
   "pct_below_90": 31.16,
   "n_students": 111954
  },
  "May": {
   "pct_below_90": 33.62,
   "n_students": 112386
  },
  "sep_mar_weighted": 37.7586,
  "sep_nov_weighted": 36.4929,
  "dec_feb_weighted": 40.4434
 },
 "2023-24": {
  "Sep": {
   "pct_below_90": 26.77,
   "n_students": 110760
  },
  "Oct": {
   "pct_below_90": 21.52,
   "n_students": 112203
  },
  "Nov": {
   "pct_below_90": 36.7,
   "n_students": 112311
  },
  "Dec": {
   "pct_below_90": 37.93,
   "n_students": 112241
  },
  "Jan": {
   "pct_below_90": 47.13,
   "n_students": 112486
  },
  "Feb": {
   "pct_below_90": 31.8,
   "n_students": 112633
  },
  "Mar": {
   "pct_below_90": 34.64,
   "n_students": 112535
  },
  "Apr": {
   "pct_below_90": 28.35,
   "n_students": 112774
  },
  "May": {
   "pct_below_90": 32.68,
   "n_students": 112786
  },
  "Jun": {
   "pct_below_90": 48.55,
   "n_students": 106027
  },
  "sep_mar_weighted": 33.8019,
  "sep_nov_weighted": 28.3394,
  "dec_feb_weighted": 38.951
 },
 "2024-25": {
  "Sep": {
   "pct_below_90": 19.4,
   "n_students": 112868
  },
  "Oct": {
   "pct_below_90": 22.14,
   "n_students": 113550
  },
  "Nov": {
   "pct_below_90": 37.08,
   "n_students": 113430
  },
  "Dec": {
   "pct_below_90": 33.21,
   "n_students": 113438
  },
  "Jan": {
   "pct_below_90": 45.7,
   "n_students": 113272
  },
  "Feb": {
   "pct_below_90": 42.12,
   "n_students": 113226
  },
  "Mar": {
   "pct_below_90": 26.7,
   "n_students": 113330
  },
  "Apr": {
   "pct_below_90": 32.63,
   "n_students": 112929
  },
  "May": {
   "pct_below_90": 30.76,
   "n_students": 112974
  },
  "sep_mar_weighted": 32.3389,
  "sep_nov_weighted": 26.2165,
  "dec_feb_weighted": 40.3396
 },
 "2025-26": {
  "Sep": {
   "pct_below_90": 19.08,
   "n_students": 111785
  },
  "Oct": {
   "pct_below_90": 19.76,
   "n_students": 111831
  },
  "Nov": {
   "pct_below_90": 33.46,
   "n_students": 111362
  },
  "Dec": {
   "pct_below_90": 44.89,
   "n_students": 111195
  },
  "Jan": {
   "pct_below_90": 47.36,
   "n_students": 111068
  },
  "Feb": {
   "pct_below_90": 35.12,
   "n_students": 110888
  },
  "Mar": {
   "pct_below_90": 37.93,
   "n_students": 110803
  },
  "sep_mar_weighted": 33.9153,
  "sep_nov_weighted": 24.0876,
  "dec_feb_weighted": 42.4616
 }
}

Evidence: packet JSON · generator script

4
How it was checkedChecked: passed
- ✓ passedEvery month's share and student count compared to the district's monthly file, and the September–March, September–November, and December–February averages and the month-by-month records recomputed from the file's own values and matched (full QA §D). The file is not loaded to the database, so there is no served-cell base case.
The QA report behind this status · the report also lists what it does not check.
Each input metric’s own checks are on its metric tree (links above). Only the district-wide all-students series is covered by the packet’s 15 source-vs-database checks; that coverage is not claimed for any other block.
5
Assumptions & caveatsAssumptions and caveats
- Within-month shares are not comparable to yearly cumulative rates.

The numbers in this block

School year	Sep	Oct	Nov	Dec	Jan	Feb	Mar	Apr	May	Jun	Sep–Mar average
2020-21 †	27.3%	22.4%	27.1%	26.9%	26.3%	27.7%	20.7%	24.4%	32.9%	—	25.5%
2021-22	30.9%	23.2%	38.2%	42.4%	46.9%	38.4%	31.2%	36.1%	47.5%	46.3%	35.9%
2022-23	30.5%	36.1%	42.8%	41.2%	38.0%	42.1%	33.5%	31.2%	33.6%	—	37.8%
2023-24	26.8%	21.5%	36.7%	37.9%	47.1%	31.8%	34.6%	28.4%	32.7%	48.5%	33.8%
2024-25	19.4%	22.1%	37.1%	33.2%	45.7%	42.1%	26.7%	32.6%	30.8%	—	32.3%
2025-26	19.1%	19.8%	33.5%	44.9%	47.4%	35.1%	37.9%	—	—	—	33.9%

District-wide share of students attending less than 90% of that month’s school days. Not comparable to the yearly rates: a student can dip below 90% in one month and finish the year above it. The Sep–Mar average weights months by their student counts.