Washington public school districts ranked by the lowest county-wide student-to-teacher ratio. Counties need at least 3 schools and 1,000 students to qualify.
| # | County | State | Ratio |
|---|---|---|---|
| 1 | Columbia County | WA | 12.0:1 |
| 2 | Lincoln County | WA | 13.0:1 |
| 3 | Whitman County | WA | 13.9:1 |
| 4 | Pend Oreille County | WA | 14.9:1 |
| 5 | Klickitat County | WA | 15.3:1 |
| 6 | Ferry County | WA | 15.8:1 |
| 7 | San Juan County | WA | 15.9:1 |
| 8 | Mason County | WA | 16.1:1 |
| 9 | Pacific County | WA | 16.2:1 |
| 10 | Walla Walla County | WA | 16.2:1 |
| 11 | Stevens County | WA | 16.3:1 |
| 12 | Skamania County | WA | 16.4:1 |
| 13 | Spokane County | WA | 16.5:1 |
| 14 | Chelan County | WA | 16.8:1 |
| 15 | Grays Harbor County | WA | 16.9:1 |
| 16 | Kittitas County | WA | 16.9:1 |
| 17 | Franklin County | WA | 17.2:1 |
| 18 | Skagit County | WA | 17.2:1 |
| 19 | Island County | WA | 17.3:1 |
| 20 | Kitsap County | WA | 17.4:1 |
| 21 | Whatcom County | WA | 17.4:1 |
| 22 | Adams County | WA | 17.5:1 |
| 23 | Asotin County | WA | 17.6:1 |
| 24 | Jefferson County | WA | 17.6:1 |
| 25 | Lewis County | WA | 17.6:1 |
| 26 | Cowlitz County | WA | 17.7:1 |
| 27 | Douglas County | WA | 17.7:1 |
| 28 | King County | WA | 18.0:1 |
| 29 | Okanogan County | WA | 18.1:1 |
| 30 | Yakima County | WA | 18.1:1 |
| 31 | Pierce County | WA | 18.2:1 |
| 32 | Clark County | WA | 18.3:1 |
| 33 | Clallam County | WA | 18.5:1 |
| 34 | Snohomish County | WA | 18.5:1 |
| 35 | Thurston County | WA | 18.5:1 |
| 36 | Grant County | WA | 18.6:1 |
| 37 | Benton County | WA | 18.8:1 |