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County rankings · Lowest proficiency

Illinois: the counties with the lowest-performing public schools

88 counties

Illinois public school districts ranked by the lowest enrollment-weighted state-assessment proficiency. Counties need at least 3 schools and 1,000 students to qualify.

#CountyStateSchoolsStudents% Proficient
1Cass CountyIL82,35223.0%
2Vermilion CountyIL3311,26724.8%
3Macon CountyIL3414,70228.7%
4Rock Island CountyIL4821,92130.2%
5Greene CountyIL61,70331.6%
6Pike CountyIL112,39431.7%
7Winnebago CountyIL8144,10331.7%
8Jefferson CountyIL215,31432.4%
9Boone CountyIL168,99333.4%
10Stephenson CountyIL206,09233.8%
11Saline CountyIL153,70434.0%
12McDonough CountyIL123,25034.3%
13Jackson CountyIL206,81134.9%
14Knox CountyIL176,35935.5%
15Warren CountyIL102,78835.7%
16Kankakee CountyIL3716,49935.8%
17Marion CountyIL225,63636.0%
18Cook CountyIL1,271697,93436.3%
19Randolph CountyIL133,87636.8%
20Lawrence CountyIL61,96436.9%
21Coles CountyIL135,97337.0%
22Franklin CountyIL195,52337.1%
23Crawford CountyIL102,68437.4%
24De Witt CountyIL72,18537.6%
25DeKalb CountyIL3916,32837.6%
26Mason CountyIL92,12437.6%
27Peoria CountyIL6527,82737.7%
28Champaign CountyIL5625,91937.8%
29Livingston CountyIL215,27337.8%
30Lee CountyIL133,77838.1%
31Fulton CountyIL214,16038.2%
32Kane CountyIL12987,25238.5%
33Adams CountyIL198,71738.7%
34Christian CountyIL184,74038.7%
35Hancock CountyIL122,70338.9%
36Morgan CountyIL194,44638.9%
37Sangamon CountyIL6727,34538.9%
38Cumberland CountyIL51,49339.0%
39LaSalle CountyIL4414,52339.0%
40Fayette CountyIL122,85839.3%
41Menard CountyIL71,70139.6%
42Mercer CountyIL81,94139.9%
43Bureau CountyIL214,54740.2%
44Marshall CountyIL71,57640.3%
45Johnson CountyIL71,74340.4%
46Wabash CountyIL51,51340.5%
47Union CountyIL152,47840.7%
48Madison CountyIL7135,25340.9%
49Whiteside CountyIL288,44541.1%
50Moultrie CountyIL61,62841.2%

See the national lowest proficiency ranking →