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Home > Illinois > Average Student Size

Largest Illinois Private Elementary Schools

The average private elementary school in Illinois has 196 students (2026-27).

The largest private elementary school in Illinois is American School, with 6,319 students.

Quick Facts (2026-27)

# IL Schools Ranked: 939
Top 20 Range (Students): 717–6,319
IL School Avg.: 196
National School Avg.: 196

Quick Facts (2026-27)

# IL Schools Ranked: 939
Top 20 Range (Students): 717–6,319
IL School Avg.: 196
National School Avg.: 196

Illinois Average Students Per School (Trends)

View Data

Year	Illinois (IL) avg
2025	195
2024	191
2023	199
2022	208
2021	202
2020	195
2019	205
2018	198
2017	204
2016	202
2015	197

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Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Show school map — Illinois (students range: 717–6,319, avg 196)

School Size Range: 590 6,319 Avg. School Size: 955

Frequently Asked Questions

What is the Illinois average private elementary schools student size?

The Illinois average private elementary schools student size is 196 for 2026-27.

What are the private elementary schools with the largest student size in Illinois?

The top ranked private elementary schools in Illinois include American School, University of Chicago Laboratory Schools and Timothy Christian Schools.

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