Metro East Sun

O'Fallon Community Consolidated School District 90 ranked 95th in enrollment with 3,799 students during the 2021-22 school year, according to the Illinois State Board of Education report.

The district was ranked 107th the year before.

O'Fallon Community Consolidated School District 90 roughly covers schools within St. Clair County and has a main office in O'Fallon.

In the 2021-22 school year, Illinois had more than 1.9 million students enrolled in nearly 4,000 schools across 852 school districts. There were more than 130,000 teachers in the public schools, or roughly one teacher for every 15 students, compared to the national average of 1:16.

K-12 enrollment has been declining in Illinois for many years, reflecting demographic changes. Combined public and private K-12 enrollment dropped 3% between the 2019–20 and 2020–21 school years (60,900 students), far more than the typical 0.5% to 1.5% annual enrollment declines in Illinois over the last 5 years.

Rank	District	City	Enrollment
1	Chicago Public School District 299	Chicago	327,338
2	School District U-46	Elgin	35,377
3	Rockford School District 205	Rockford	27,328
4	Indian Prairie School District 204	Aurora	25,632
5	Plainfield School District 202	Plainfield	24,904
6	Community Unit School District 300	Algonquin	19,951
7	Oswego Community Unit School District 308	Oswego	16,873
8	Naperville Community Unit School District 203	Naperville	16,064
9	Valley View Community Unit School District 365U	Romeoville	15,015
10	Schaumburg Community Consolidated School District 54	Schaumburg	14,957
11	Waukegan Community Unit School District 60	Waukegan	14,041
12	Springfield School District 186	Springfield	13,015
13	Aurora East Unit School District 131	Aurora	12,674
14	Peoria School District 150	Peoria	12,667
15	McLean County Unit School District 5	Normal	12,393
16	Township High School District 211	Palatine	11,981
17	Township High School District 214	Arlington Heights	11,907
18	St. Charles Community Unit School District 303	St. Charles	11,782
19	Community Unit School District 200	Wheaton	11,550
20	Palatine Community Consolidated School District 15	Palatine	11,080
21	Aurora West Unit School District 129	Aurora	10,925
22	Champaign Community Unit School District 4	Champaign	10,120
23	Joliet Public School District 86	Joliet	9,814
24	Cicero School District 99	Cicero	9,228
25	Huntley Community School District 158	Algonquin	8,590
26	Elmhurst School District 205	Elmhurst	8,164
27	Decatur School District 61	Decatur	8,147
28	Barrington Community Unit School District 220	Barrington	8,074
29	J. Sterling Morton High School District 201	Cicero	7,890
30	Glenbard Township High School District 87	Glen Ellyn	7,788
31	Consolidated High School District 230	Orland Park	7,644
32	Belvidere Consolidated Unit School District 100	Belvidere	7,457
33	Edwardsville Community Unit School District 7	Edwardsville	7,328
34	Moline-Coal Valley School District 40	Moline	7,123
35	Crystal Lake Community Consolidated School District 47	Crystal Lake	6,973
36	Joliet Township High School District 204	Joliet	6,838
37	DeKalb Community Unit School District 428	DeKalb	6,703
38	Evanston Community Consolidated School District 65	Evanston	6,661
39	Yorkville Community Unit School District 115	Yorkville	6,596
40	Lincoln Way Community High School District 210	New Lenox	6,586
41	Quincy School District 172	Quincy	6,366
42	Round Lake Community Unit School District 116	Round Lake	6,287
43	Maine Township High School District 207	Park Ridge	6,199
44	Harlem Unit School District 122	Machesney Park	6,188
45	Woodstock Community Unit School District 200	Woodstock	6,167
46	Rock Island School District 41	Rock Island	6,096
47	Collinsville Community Unit School District 10	Collinsville	6,035
48	Community Consolidated School District 59	Elk Grove Village	5,808
49	Alton Community Unit School District 11	Alton	5,800
50	Wheeling Community Consolidated School District 21	Wheeling	5,794
51	Granite City Community Unit School District 9	Granite City	5,739
52	Community High School District 155	Crystal Lake	5,583
53	Oak Park Elementary School District 97	Oak Park	5,532
54	Lake Zurich Community Unit School District 95	Lake Zurich	5,480
55	Community High School District 218	Oak Lawn	5,341
56	Arlington Heights School District 25	Arlington Heights	5,278
57	Batavia Unit School District 101	Batavia	5,265
58	Orland School District 135	Orland Park	5,149
59	Northfield Township High School District 225	Glenview	5,096
60	Geneva Community Unit School District 304	Geneva	5,092
61	Bremen Community High School District 228	Midlothian	5,038
62	New Lenox School District 122	New Lenox	4,994
63	Bloomington School District 87	Bloomington	4,982
64	Kankakee School District 111	Kankakee	4,932
65	Woodland Community Consolidated School District 50	Gurnee	4,817
66	Community High School District 99	Downers Grove	4,808
67	Downers Grove Grade School District 58	Downers Grove	4,802
68	Belleville Township High School District 201	Belleville	4,773
69	Danville Community Consolidated School District 118	Danville	4,765
70	Central Community Unit School District 301	Burlington	4,638
71	Ball-Chatham Community Unit School District 5	Chatham	4,636
72	East St. Louis School District 189	East St. Louis	4,618
73	Dunlap Community Unit School District 323	Dunlap	4,614
74	Thornton Township High School District 205	South Holland	4,584
75	Park Ridge Consolidated Community School District 64	Park Ridge	4,563
76	Niles Township Community High School District 219	Skokie	4,556
77	Minooka Community Consolidated School District 201	Minooka	4,462
78	Proviso Township High School District 209	Forest Park	4,415
79	Adlai E. Stevenson High School District 125	Lincolnshire	4,352
80	Crete-Monee Community Unit School District 201-U	Crete	4,290
81	Glenview Community Consolidated School District 34	Glenview	4,281
82	Wauconda Community Unit School District 118	Wauconda	4,267
83	Maywood-Melrose Park-Broadview School District 89	Melrose Park	4,258
84	Des Plaines Community Consolidated School District 62	Des Plaines	4,213
85	Urbana School District 116	Urbana	4,208
86	Mascoutah Community Unit School District 19	Mascoutah	4,154
87	Kaneland Community Unit School District 302	Maple Park	4,053
88	McHenry Community Consolidated School District 15	McHenry	4,029
89	Troy Community Consolidated School District 30C	Plainfield	3,994
90	Triad Community Unit School District 2	Troy	3,981
91	Lyons Township High School District 204	La Grange	3,919
92	Galesburg Community Unit School District 205	Galesburg	3,901
93	Hinsdale Township High School District 86	Hinsdale	3,898
94	New Trier Township High School District 203	Northfield	3,846
95	O'Fallon Community Consolidated School District 90	O'Fallon	3,799
96	North Shore School District 112	Highland Park	3,786
97	Lockport Township High School District 205	Lockport	3,778
98	DuPage High School District 88	Addison	3,776
99	Marion Community Unit School District 2	Marion	3,695
100	Hinsdale Community Consolidated School District 181	Clarendon Hills	3,662
101	Evanston Township High School District 202	Evanston	3,653
102	Warren Township High School District 121	Gurnee	3,651
103	Homer Community Consolidated School District 33C	Homer Glen	3,640
104	Addison School District 4	Addison	3,561
105	Hawthorn Community Consolidated School District 73	Vernon Hills	3,557
106	Sycamore Community Unit School District 427	Sycamore	3,545
107	Grayslake Consolidated Community School District 46	Grayslake	3,512
108	Kirby School District 140	Tinley Park	3,487
109	Glen Ellyn School District 41	Glen Ellyn	3,477
110	West Chicago Elementary School District 33	West Chicago	3,468
111	East Maine School District 63	Des Plaines	3,458
112	Freeport School District 145	Freeport	3,427
113	Belleville School District 118	Belleville	3,395
114	Leyden Community High School District 212	Franklin Park	3,392
115	North Palos School District 117	Palos Hills	3,360
116	Wilmette School District 39	Wilmette	3,342
117	North Chicago School District 187	North Chicago	3,340
118	Kildeer Countryside Community Consolidated School District 96	Buffalo Grove	3,333
119	Oak Park and River Forest District 200	Oak Park	3,329
120	Mahomet-Seymour Community Unit School District 3	Mahomet	3,325
121	Libertyville Community High School District 128	Vernon Hills	3,296
122	Oak Lawn-Hometown School District 123	Oak Lawn	3,277
123	Community Consolidated School District 93	Bloomingdale	3,249
124	Thornton Fractional Township High School District 215	Lansing	3,238
125	Burbank School District 111	Burbank	3,232
126	Township High School District 113	Highland Park	3,220
127	Sterling Community Unit School District 5	Sterling	3,161
128	Morton Community Unit School District 709	Morton	3,140
129	Pekin Public School District 108	Pekin	3,137
130	Jacksonville School District 117	Jacksonville	3,131
131	Villa Park School District 45	Villa Park	3,115
132	Berwyn South School District 100	Berwyn	3,103
133	Mattoon Community Unit School District 2	Mattoon	3,059
134	Cook County School District 130	Blue Island	3,023
135	Cahokia Community Unit School District 187	Cahokia	3,013
136	La Grange School District 102	La Grange Park	2,962
137	Lombard School District 44	Lombard	2,927
138	Bloom Township High School District 206	Chicago Heights	2,888
139	Highland Community Unit School District 5	Highland	2,820
140	Elmwood Park Community Unit School District 401	Elmwood Park	2,788
141	Minooka Community High School District 111	Channahon	2,783
142	Deerfield School District 109	Deerfield	2,740
143	Woodridge School District 68	Woodridge	2,739
144	Homewood-Flossmoor Community High School District 233	Flossmoor	2,720
145	Waterloo Community Unit School District 5	Waterloo	2,676
146	Chicago Heights School District 170	Chicago Heights	2,654
147	Antioch Community Consolidated School District 34	Antioch	2,610
148	Grayslake Community High School District 127	Grayslake	2,597
149	Rich Township High School District 227	Matteson	2,595
150	Frankfort Community Consolidated School District 157C	Frankfort	2,591
151	Antioch Community High School District 117	Lake Villa	2,588
152	Prairie-Hills Elementary School District 144	Markham	2,582
153	Lansing School District 158	Lansing	2,541
154	Summit Hill School District 161	Frankfort	2,536
155	East Moline School District 37	East Moline	2,527
155	Lake Park Community High School District 108	Roselle	2,527
157	Charleston Community Unit School District 1	Charleston	2,525
158	Berwyn North School District 98	Berwyn	2,504
159	Harvard Community Unit School District 50	Harvard	2,502
160	Zion-Benton Township High School District 126	Zion	2,501
161	O'Fallon Township High School District 203	O'Fallon	2,497
162	Aptakisic-Tripp Community Consolidated School District 102	Buffalo Grove	2,474
163	Geneseo Community Unit School District 228	Geneseo	2,466
164	Dixon Unit School District 170	Dixon	2,463
165	Lake Villa Community Consolidated School District 41	Lake Villa	2,432
166	Indian Springs School District 109	Justice	2,413
167	Jersey Community Unit School District 100	Jerseyville	2,412
168	Mannheim School District 83	Franklin Park	2,409
169	Lemont-Bromberek Combined School District 113A	Lemont	2,395
170	Bethalto Consolidated Unit School District 8	Bethalto	2,390
171	Mount Zion Community Unit School District 3	Mount Zion	2,375
172	Matteson Elementary School District 162	Richton Park	2,362
173	Plano Community Unit School District 88	Plano	2,351
174	Cary Community Consolidated School District 26	Cary	2,350
175	Marquardt School District 15	Glendale Heights	2,339
176	Herrin Community Unit School District 4	Herrin	2,337
177	Berkeley School District 87	Berkeley	2,312
178	Community Consolidated School District 146	Tinley Park	2,307
179	Ridgeland School District 122	Oak Lawn	2,300
180	Effingham Community Unit School District 40	Effingham	2,294
181	Bourbonnais School District 53	Bourbonnais	2,281
182	Flossmoor School District 161	Chicago Heights	2,267
183	Taylorville Community Unit School District 3	Taylorville	2,247
183	Mount Prospect School District 57	Mount Prospect	2,247
185	Dolton School District 149	Calumet City	2,242
186	Glen Ellyn Community Consolidated School District 89	Glen Ellyn	2,228
187	Carterville Community Unit School District 5	Carterville	2,200
188	East Richland Community Unit School District 1	Olney	2,194
188	Canton Union School District 66	Canton	2,194
190	McHenry Community High School District 156	McHenry	2,185
191	Zion Elementary School District 6	Zion	2,184
192	Mundelein Consolidated High School District 120	Mundelein	2,145
193	Bellwood School District 88	Bellwood	2,129
194	Lyons School District 103	Lyons	2,121
195	Rochester Community Unit School District 3A	Rochester	2,102
196	Libertyville School District 70	Libertyville	2,097
197	Fremont School District 79	Mundelein	2,093
198	Coal City Community Unit School District 1	Coal City	2,056
199	Illinois Valley Central Unit School District 321	Chillicothe	2,035
200	Palos Community Consolidated School District 118	Palos Park	2,017