📊 What this ranking measures
Rankings are based on academic achievement — the share of students scoring proficient or above on state reading and math assessments (IAR 2023–24), ranked against other districts in the same state — not on spending, district size, or staffing. See full methodology →
All 6 Rated Districts in Washington County, IL
Sorted by rating, then state percentile
| County Rank | District | District Office | Rating | State Percentile |
|---|---|---|---|---|
| #1 | West Washington County Community Unit District 10 | Okawville | 9/10 Excellent | 82nd |
| #2 | Nashville Community High School District 99 | Nashville | 6/10 Average | 50th |
| #3 | Nashville Consolidated Community School District 49 | Nashville | 4/10 Below Average | 38th |
| #4 | Oakdale Community Consolidated School District 1 | Oakdale | 4/10 Below Average | 30th |
| #5 | Ashley Community Consolidated School District 15 | Ashley | 3/10 Below Average | 27th |
| #6 | Irvington County Community Unit School District 11 | Irvington | 1/10 Poor | 4th |
Best School Districts in Washington County, Illinois (2026)
This page lists the 6 public school districts headquartered in Washington County, Illinois that have a SchoolDistrictFinder rating, scored using IAR 2023–24 state assessment data. The county rank is simply their order here; the state percentile compares each district with every rated district in Illinois, which is how the 1–10 rating is set. Ratings are not comparable with districts in other states.
Districts are placed in the county of their NCES directory listing. A district's boundaries can cross county lines, and a home in Washington County may be served by a district headquartered next door — search your address or zip code to confirm.
Frequently Asked Questions
What is the best-rated school district in Washington County, Illinois? ▼
Among the 6 rated districts in Washington County, Illinois, the highest-rated is West Washington County Community Unit District 10 (Okawville), rated 9/10 (Excellent) and in the 82nd percentile of Illinois districts on IAR 2023–24 reading and math proficiency.
How are these rankings calculated? ▼
Each district's rating comes from the share of its students scoring proficient or above on state reading and math assessments (IAR 2023–24), percentile-ranked against all rated districts in Illinois and converted to a 1–10 scale. Full methodology here.