Washington 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.
| # | County | State | % Proficient |
|---|---|---|---|
| 1 | Whitman County | WA | 59.4% |
| 2 | King County | WA | 53.3% |
| 3 | San Juan County | WA | 50.9% |
| 4 | Snohomish County | WA | 50.9% |
| 5 | Kitsap County | WA | 50.6% |
| 6 | Island County | WA | 50.5% |
| 7 | Lincoln County | WA | 49.8% |
| 8 | Jefferson County | WA | 48.1% |
| 9 | Thurston County | WA | 47.9% |
| 10 | Spokane County | WA | 46.5% |
| 11 | Pierce County | WA | 45.8% |
| 12 | Whatcom County | WA | 45.4% |
| 13 | Kittitas County | WA | 45.2% |
| 14 | Stevens County | WA | 43.3% |
| 15 | Walla Walla County | WA | 41.8% |
| 16 | Pend Oreille County | WA | 41.4% |
| 17 | Klickitat County | WA | 39.4% |
| 18 | Skagit County | WA | 39.4% |
| 19 | Lewis County | WA | 39.1% |
| 20 | Ferry County | WA | 38.5% |
| 21 | Pacific County | WA | 37.9% |
| 22 | Grays Harbor County | WA | 35.6% |
| 23 | Grant County | WA | 33.1% |
| 24 | Yakima County | WA | 32.4% |
| 25 | Mason County | WA | 31.1% |
| 26 | Franklin County | WA | 29.3% |