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EDITION 2026.08 /8,821 RECORDS / PUBLIC DOMAIN

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Public school / High

Comm H S Dist 99 - South High Sch

Downers Grove, Illinois

NCES ID
171257001519
District
Chsd 99
School type
Regular
Title I
Not designated

Comm H S Dist 99 - South High Sch is a public high school in Downers Grove, Illinois, run by Chsd 99. It enrols 2,637 students — the 596th largest of 4,435 public schools in Illinois.

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Reported figures, 2022–2023

The Common Core of Data is a directory collection: it records size and staffing, not achievement. Nothing here says whether a school is good.

Enrollment

2,637students

596th nationally, tied with 2

Teachers

179.0FTE

257th nationally, tied with 7

Students per teacher

14.7students

44596th nationally, tied with 939

How these figures are defined

Enrollment

Students reported in the autumn headcount. Size is not quality — it is here because it is the figure every other one has to be read against, and because a school of 90 and a school of 4,000 are not comparable on anything else.

Teachers

Classroom teachers in full-time equivalents, so a half-time teacher counts as 0.5. Non-teaching staff are excluded.

Students per teacher

Enrollment divided by teacher FTE. It is not class size: it counts every teacher against every student, including specialists who never take a full class. A school can have 15 students per teacher and 30 in the room.

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Within Chsd 99

Schools in the same district, which is the comparison the data actually supports — a peer group defined by who runs them rather than by whichever names sort nearby.

Enrollment — same district
  1. 1Comm H S Dist 99 - South High Sch2,637 students
  2. 2Comm H S Dist 99 - North H S2,138 students
Distance from the state median

Baseline: Illinois median across 4,435 public schools. Bars right of the rule are above it.

  • Enrollment+552.7%
  • Teachers+588.5%
  • Students per teacher+7.3%
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Sources & licence

Collected by the National Center for Education Statistics. Nothing here is edited, interpolated or estimated.

Provenance

National Center for Education Statistics
Common Core of Data — school and district directory
Current · as of August 17, 2026U.S. Public Domain (NCES)

Collected and published by NCES; retrieved through the Urban Institute Education Data Portal, which republishes the NCES files unchanged.

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Data as of September 1, 2022.