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County rankings · Highest proficiency

Iowa: the counties with the highest-performing public schools

89 counties

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

#CountyStateSchoolsStudents% Proficient
1Hancock CountyIA61,56083.9%
2Lyon CountyIA82,15783.1%
3Winneshiek CountyIA102,43482.6%
4Mitchell CountyIA61,63182.4%
5Bremer CountyIA205,34682.1%
6Grundy CountyIA112,33482.0%
7Taylor CountyIA41,04182.0%
8O'Brien CountyIA92,37781.5%
9Delaware CountyIA102,57180.9%
10Dallas CountyIA4022,93880.4%
11Humboldt CountyIA61,53080.0%
12Story CountyIA2611,66579.7%
13Sioux CountyIA185,32179.5%
14Winnebago CountyIA92,19079.4%
15Plymouth CountyIA164,21978.7%
16Kossuth CountyIA81,95478.5%
17Dickinson CountyIA93,00578.3%
18Poweshiek CountyIA102,56678.2%
19Mills CountyIA62,44978.0%
20Butler CountyIA112,12077.7%
21Madison CountyIA103,35577.6%
22Iowa CountyIA102,58077.4%
23Monroe CountyIA51,12377.4%
24Sac CountyIA61,36276.9%
25Warren CountyIA2010,47376.8%
26Benton CountyIA123,91976.7%
27Clay CountyIA62,14776.6%
28Marion CountyIA175,57176.1%
29Shelby CountyIA61,87775.6%
30Chickasaw CountyIA72,05575.4%
31Harrison CountyIA102,53575.4%
32Buchanan CountyIA173,23175.0%
33Cherokee CountyIA82,04874.3%
34Carroll CountyIA102,91274.2%
35Hamilton CountyIA82,43274.1%
36Howard CountyIA61,45274.0%
37Union CountyIA61,74674.0%
38Boone CountyIA133,73573.2%
39Fremont CountyIA81,10472.9%
40Guthrie CountyIA91,85872.8%
41Keokuk CountyIA61,06372.4%
42Allamakee CountyIA112,18372.2%
43Cass CountyIA113,95772.2%
44Hardin CountyIA143,07372.2%
45Page CountyIA112,55772.1%
46Crawford CountyIA113,00771.9%
47Palo Alto CountyIA101,47271.9%
48Ida CountyIA51,15671.8%
49Johnson CountyIA4320,01971.8%
50Franklin CountyIA71,80071.4%

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