Districts in Cook County39 districts, sorted by rating
Zip Codes in Cook County
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School Districts in Cook County, Illinois
Cook County has 39 public school districts covering 155 zip codes. The top-rated district in Cook County is New Trier Township High School District 203 (10/10). Ratings are based on the share of students proficient in reading and math on state assessments (Illinois IAR 2023–24 for most districts), ranked against all districts in Illinois. Directory details come from NCES CCD 2024–25.
Enter your zip code on any page to confirm your exact district assignment — district boundaries are address-specific and may not follow county or city lines.