Illinois · NCES CCD 2024-25

Best Student-Teacher Ratios in Illinois

The 50 public schools in Illinois with the lowest student-teacher ratios, a staffing-intensity measure computed from NCES staffing data (not a direct class-size figure).

Compiled from official source data by PlainSchools. · Updated August 2026

The ranking in one line

Ogden Int High School runs Illinois's smallest classes at 4.8:1, and 50 of the 50 schools listed sit below the state average of 14:1.

4.8:1
smallest classes (Ogden Int High School): 50
listed schools below the state average: 14:1
Illinois average: 15.7:1
national average

#	School	Enrollment	Level	District	Vs State Avg	Student:Teacher
1	Ogden Int High SchoolChicago	519	High	City of Chicago Sd 299	-66%	4.8:1
2	Alcott College PrepChicago	373	High	City of Chicago Sd 299	-65%	4.9:1
3	Raby High SchoolChicago	128	High	City of Chicago Sd 299	-64%	5.1:1
4	Blair Early Childhood CenterChicago	164	Other	City of Chicago Sd 299	-55%	6.3:1
5	Butler Junior High SchoolOak Brook	163	Middle	Butler Sd 53	-55%	6.3:1
6	Saunemin Elem SchoolSaunemin	102	Other	Saunemin Ccsd 438	-54%	6.4:1
7	Marycrest Early Childhood CenterJoliet	142	Other	Joliet Psd 86	-54%	6.5:1
8	Shiloh High SchoolHume	115	Other	Shiloh Cusd 1	-51%	6.8:1
9	Air Force Acad High SchoolChicago	131	High	City of Chicago Sd 299	-51%	6.9:1
10	Avoca West Elem SchoolGlenview	313	Elementary	Avoca Sd 37	-50%	7:1
11	Flanagan-Cornell High SchoolFlanagan	106	High	Flanagan-Cornell Dist 74	-49%	7.1:1
12	East St Louis-Lincoln Middle SchEast Saint Louis	359	Elementary	East St Louis Sd 189	-49%	7.2:1
13	W W Walker Elem SchoolBedford Park	130	Elementary	Summit Sd 104	-49%	7.2:1
14	Thomas Early Childhood CenterChicago	123	Other	City of Chicago Sd 299	-49%	7.2:1
15	Dr Bessie Rhodes-Global StudiesSkokie	254	Elementary	Evanston Ccsd 65	-48%	7.3:1
16	Elsie C Johnson Elem SchHanover Park	253	Elementary	Ccsd 93	-47%	7.4:1
17	Clark G R Elem SchoolChicago	134	Other	City of Chicago Sd 299	-47%	7.4:1
18	Cisne High SchoolCisne	104	High	North Wayne Cusd 200	-47%	7.4:1
19	Signal Hill Elem SchoolBelleville	291	Other	Signal Hill Sd 181	-46%	7.5:1
20	Diamond Lake SchoolMundelein	262	Other	Diamond Lake Sd 76	-46%	7.5:1
21	Meridian High SchoolMounds	206	Other	Meridian Cusd 101	-46%	7.6:1
22	Bushnell-Prairie City High SchBushnell	175	High	Bushnell Prairie City Cusd 170	-46%	7.6:1
23	Madison Senior High SchoolMadison	152	High	Madison Cusd 12	-46%	7.6:1
24	Dr Donald Wharton Elem SchoolSummit	114	Elementary	Summit Sd 104	-46%	7.6:1
25	Armstrong High SchoolArmstrong	114	High	Armstrong Twp Hsd 225	-46%	7.6:1
26	Rhodes Elem SchoolRiver Grove	499	Other	Rhodes Sd 84-5	-45%	7.7:1
27	Yates Elem SchoolChicago	268	Other	City of Chicago Sd 299	-45%	7.7:1
28	Earl H Hanson Elem SchoolRock Island	201	Other	Rock Island Sd 41	-45%	7.7:1
29	Roy De Shane Elementary SchoolCarol Stream	185	Elementary	Ccsd 93	-45%	7.7:1
30	Zeigler-Royalton High SchoolZeigler	131	High	Zeigler-Royalton Cusd 188	-45%	7.7:1
31	Cumberland Elem SchoolDes Plaines	279	Elementary	Ccsd 62	-44%	7.8:1
32	Blue Ridge High SchoolFarmer City	155	High	Blue Ridge Cusd 18	-44%	7.8:1
33	Harriet Tubman Elem SchoolChicago	308	Other	City of Chicago Sd 299	-44%	7.9:1
34	Rosemont Elem SchoolRosemont	221	Other	Rosemont Esd 78	-44%	7.9:1
35	Erie High SchoolErie	190	High	Erie Cusd 1	-44%	7.9:1
36	Walsh Elem SchoolSummit	182	Elementary	Summit Sd 104	-44%	7.9:1
37	Edison Elem SchoolElmhurst	318	Elementary	Elmhurst Sd 205	-43%	8:1
38	Delavan Elementary SchoolDelavan	191	Other	Delavan Cusd 703	-43%	8:1
39	Dr Ml King Jr Literary&Fine ArtsEvanston	421	Elementary	Evanston Ccsd 65	-42%	8.1:1
40	Hawthorn Elem School NorthVernon Hills	347	Elementary	Hawthorn Ccsd 73	-42%	8.1:1
41	Costello SchoolLyons	228	Other	Lyons Sd 103	-42%	8.1:1
42	Lebanon High SchoolLebanon	218	Other	Lebanon Cusd 9	-42%	8.1:1
43	Erie Middle SchoolErie	171	Elementary	Erie Cusd 1	-42%	8.1:1
44	Gardner-South Wilmington Twp H SGardner	154	High	Gardner S Wilmington Twp Hsd 73	-42%	8.1:1
45	Riverdale SchoolRiverdale	137	Elementary	Dolton Sd 148	-42%	8.1:1
46	Washington Elem SchoolRushville	113	Other	Schuyler-Industry Cusd 5	-42%	8.1:1
47	Beard Elem SchoolChicago	327	Other	City of Chicago Sd 299	-41%	8.2:1
48	Perry Elementary SchoolCarpentersville	278	Elementary	Cusd 300	-41%	8.2:1
49	Greenview Jr/Sr High SchoolGreenview	107	Other	Greenview Cusd 200	-41%	8.2:1
50	John R Tibbott Elem SchoolBolingbrook	330	Other	Valley View Cusd 365u	-41%	8.3:1

Source: National Center for Education Statistics (NCES), Common Core of Data (CCD), 2024-25 school year. Schools with enrollment under 100 are excluded.

Largest Schools in Illinois → Highest-Spending Districts → Chronic Absenteeism →

Read our methodology - how this data is sourced, computed, and verified.