| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| Somonauk Community Unit School District 432 | Somonauk | 8/10 Good · 75th pct | 750 | 3 | PK–12 | 1 |
| Sandwich Community Unit School District 430 | Millington | 7/10 Good · 64th pct | 1,895 | 6 | PK–12 | 2 |
| Hinckley-Big Rock Community Unit School District 429 | Big Rock | 6/10 Average · 57th pct | 696 | 3 | PK–12 | 2 |
| Sycamore Community Unit School District 427 | Clare | 6/10 Average · 56th pct | 3,598 | 7 | PK–12 | 2 |
| Indian Creek Community Unit District 425 | Lee | 5/10 Average · 47th pct | 711 | 3 | PK–12 | 3 |
| Genoa-Kingston Community Unit School District 424 | Genoa | 5/10 Average · 40th pct | 1,544 | 4 | PK–12 | 2 |
| Hiawatha Community Unit School District 426 | Kirkland | 4/10 Below Average · 39th pct | 420 | 2 | PK–12 | 1 |
| DeKalb Community Unit School District 428 | Cortland | 1/10 Poor · 8th pct | 6,840 | 12 | PK–12 | 3 |
How DeKalb County compares
Together they enroll 16,454 students across 40 schools. The largest is DeKalb Community Unit School District 428 with 6,840 students. Districts here average 5.2/10, below the Illinois average of 5.4/10. Ratings range from 1/10 to 8/10.
School Districts in DeKalb County, Illinois
DeKalb County has 8 public school districts covering 16 zip codes. The top-rated district in DeKalb County is Somonauk Community Unit School District 432 (8/10). Ratings are based on the share of students proficient in reading and math on state assessments (NCES EDFacts, 2021–22 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.