allk12 · Rankings · Highest ratio · Illinois · High schools

The public high schools with the highest student-to-teacher ratios in Illinois

Across Illinois, 528 public high schools are ranked here, ranked by the most students per teacher, a proxy for larger classes. YCCS-Sullivan House Alt HS leads the list at 35.1:1, against a median of 14.4:1 across the ranked schools.

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Schools ranked

528

Illinois

Top Students/teacher

35.1:1

Median Students/teacher

14.4:1

HIGHEST RATIO · ILLINOIS

#	School	City	District	Level	Students	Ratio
1	YCCS-Sullivan House Alt HS	Chicago, IL	Chicago Public Schools Dist 299	High	281	35.1:1
2	YCCS-Innovations of Arts Integr	Chicago, IL	Chicago Public Schools Dist 299	High	392	32.7:1
3	CICS - Ralph Ellison Campus	Chicago, IL	Chicago Public Schools Dist 299	High	247	24.7:1
4	North Lawndale Prep Chtr-Collins	Chicago, IL	Chicago Public Schools Dist 299	High	276	23.0:1
5	North Lawndale Prep Chtr - Christ	Chicago, IL	Chicago Public Schools Dist 299	High	258	21.5:1
6	Art in Motion Charter School	Chicago, IL	Chicago Public Schools Dist 299	High	602	21.5:1
7	Richwoods High School	Peoria, IL	Peoria SD 150	High	1,685	21.2:1
8	Peoria High School	Peoria, IL	Peoria SD 150	High	1,541	20.9:1
9	Joliet West High School	Joliet, IL	Joliet Twp HSD 204	High	3,451	20.6:1
10	Illinois Mathematics and Science	Aurora, IL	Il Mathematics & Science Academy	High	656	20.5:1
11	Granite City High School	Granite City, IL	Granite City CUSD 9	High	1,755	20.2:1
12	MacArthur High School	Decatur, IL	Decatur SD 61	High	1,059	20.0:1
13	Jefferson High School	Rockford, IL	Rockford SD 205	High	2,173	19.6:1
14	Guilford High School	Rockford, IL	Rockford SD 205	High	2,216	19.5:1
15	Auburn High School	Rockford, IL	Rockford SD 205	High	1,957	19.2:1
16	Noble St Chtr-Hansberry Prep Slvr	Chicago, IL	Chicago Public Schools Dist 299	High	534	19.1:1
17	East High School	Aurora, IL	Aurora East USD 131	High	4,020	18.8:1
18	Tinley Park High School	Tinley Park, IL	Bremen CHSD 228	High	1,042	18.7:1
19	Quincy Sr High School	Quincy, IL	Quincy SD 172	High	1,847	18.7:1
20	Cahokia High School	Cahokia, IL	Cahokia CUSD 187	High	850	18.6:1
21	Alton High School	Alton, IL	Alton CUSD 11	High	1,823	18.5:1
22	Central High School	Burilngton, IL	Central CUSD 301	High	1,575	18.4:1
23	Proviso Math and Science Academy	Forest Park, IL	Proviso Twp HSD 209	High	925	18.4:1
24	Moline Sr High School	Moline, IL	Moline-Coal Valley CUSD 40	High	2,195	18.4:1
25	J Sterling Morton East High Sch	Cicero, IL	J S Morton HSD 201	High	3,394	18.4:1
26	Dunlap High School	Dunlap, IL	Dunlap CUSD 323	High	1,420	18.3:1
27	Noble St Chtr - Mansueto	Chicago, IL	Chicago Public Schools Dist 299	High	1,106	18.3:1
28	Bloom High School	Chicago Heights, IL	Bloom Twp HSD 206	High	1,823	18.3:1
29	Joliet Central High School	Joliet, IL	Joliet Twp HSD 204	High	3,295	18.2:1
30	YCCS-ASPIRA Pantoja Alt HS	Chicago, IL	Chicago Public Schools Dist 299	High	200	18.2:1
31	Lincoln-Way East High School	Frankfort, IL	Lincoln Way CHSD 210	High	2,696	18.1:1
32	Lincoln Way West	New Lenox, IL	Lincoln Way CHSD 210	High	2,047	18.1:1
33	Chicago HS for the Arts	Chicago, IL	Chicago Public Schools Dist 299	High	578	18.1:1
34	Noble St Chtr-Muchin College Prep	Chicago, IL	Chicago Public Schools Dist 299	High	909	18.0:1
35	Glenbard West High School	Glen Ellyn, IL	Glenbard Twp HSD 87	High	2,330	17.9:1
36	Minooka Community High School	Channahon, IL	Minooka CHSD 111	High	2,918	17.8:1
37	Warrensburg-Latham High School	Warrensburg, IL	Warrensburg-Latham CUSD 11	High	336	17.7:1
38	Cary-Grove Community High School	Cary, IL	CHSD 155	High	1,348	17.7:1
39	Morris Community High School	Morris, IL	Morris CHSD 101	High	926	17.6:1
40	Plainfield North High School	Plainfield, IL	Plainfield SD 202	High	2,399	17.6:1
41	Sterling High School	Sterling, IL	Sterling CUSD 5	High	999	17.5:1
42	Glenwood High School	Chatham, IL	Ball Chatham CUSD 5	High	1,484	17.5:1
43	Brooks College Prep Academy HS	Chicago, IL	Chicago Public Schools Dist 299	High	1,007	17.5:1
44	Hancock College Preparatory HS	Chicago, IL	Chicago Public Schools Dist 299	High	1,050	17.5:1
45	Legal Prep Academy Charter HS	Chicago, IL	Chicago Public Schools Dist 299	High	210	17.5:1
46	Oak Forest High School	Oak Forest, IL	Bremen CHSD 228	High	1,329	17.4:1
47	Kenwood Academy High School	Chicago, IL	Chicago Public Schools Dist 299	High	2,268	17.4:1
48	Eureka High School	Eureka, IL	Eureka CUD 140	High	513	17.4:1
49	Rock Island High School	Rock Island, IL	Rock Island SD 41	High	1,812	17.4:1
50	Mt Zion High School	Mount Zion, IL	Mt Zion CUSD 3	High	762	17.4:1

Page 1 of 11 · top 528 of 528 ranked. NCES + state assessment data, 2024-25.↓ Download full CSV

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DATA NOTICE

allk12 is independent and not affiliated with, endorsed by, or sponsored by NCES, the US Census Bureau, any state education agency or assessment program, or any other government agency. Source data is compiled from public records and provided "as is," without warranty of accuracy or completeness. You rely on it, and any analysis derived from it, at your own risk. See the full disclaimer.