| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| West Washington County Community Unit District 10 | Addieville | 9/10 Excellent · 82nd pct | 529 | 2 | PK–12 | 2 |
| Nashville Community High School District 99 | Nashville | 6/10 Average · 50th pct | 411 | 1 | 9–12 | 6 |
| Nashville Consolidated Community School District 49 | Nashville | 4/10 Below Average · 38th pct | 584 | 1 | PK–8 | 0 |
| Oakdale Community Consolidated School District 1 | Oakdale | 4/10 Below Average · 30th pct | 60 | 1 | K–8 | 0 |
| Ashley Community Consolidated School District 15 | Ashley | 3/10 Below Average · 27th pct | 120 | 1 | PK–8 | 0 |
| Centralia High School District 200 | Irvington | 3/10 Below Average · 24th pct | 863 | 1 | 9–12 | 2 |
| Irvington County Community Unit School District 11 | Irvington | 1/10 Poor · 4th pct | 72 | 1 | K–8 | 0 |
How Washington County compares
Together they enroll 2,639 students across 8 schools. The largest is Centralia High School District 200 with 863 students. Districts here average 4.3/10, below the Illinois average of 5.6/10. Ratings range from 1/10 to 9/10.
School Districts in Washington County, Illinois
Washington County has 7 public school districts covering 10 zip codes. The top-rated district in Washington County is West Washington County Community Unit District 10 (9/10). Ratings are based on the share of students proficient in reading and math on state assessments (IAR 2023–24), 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.
Frequently Asked Questions
How many school districts are in Washington County, IL?
7 school districts serve zip codes in Washington County, IL. This page lists each one with its rating, enrollment, grade span and the zip codes it covers.
What is the best-rated school district in Washington County, IL?
Of the districts serving Washington County, West Washington County Community Unit District 10 has the highest rating on this site at 9/10. That places it in the 82nd percentile among Illinois school districts.
How are these school district ratings calculated?
Each rating is the share of students scoring proficient or above on Illinois reading and math assessments, ranked against other districts in Illinois and converted to a 1–10 scale. Percentiles compare districts within Illinois only, never across state lines.