Idaho 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 | Blaine County | ID | 12.2:1 |
| 2 | Shoshone County | ID | 13.0:1 |
| 3 | Latah County | ID | 14.2:1 |
| 4 | Valley County | ID | 14.2:1 |
| 5 | Benewah County | ID | 14.3:1 |
| 6 | Idaho County | ID | 14.4:1 |
| 7 | Power County | ID | 14.6:1 |
| 8 | Washington County | ID | 14.6:1 |
| 9 | Gooding County | ID | 14.7:1 |
| 10 | Nez Perce County | ID | 14.8:1 |
| 11 | Clearwater County | ID | 15.4:1 |
| 12 | Caribou County | ID | 16.0:1 |
| 13 | Teton County | ID | 16.1:1 |
| 14 | Bonner County | ID | 16.3:1 |
| 15 | Gem County | ID | 16.4:1 |
| 16 | Bear Lake County | ID | 17.0:1 |
| 17 | Fremont County | ID | 17.1:1 |
| 18 | Owyhee County | ID | 17.1:1 |
| 19 | Payette County | ID | 17.3:1 |
| 20 | Jerome County | ID | 17.5:1 |
| 21 | Twin Falls County | ID | 17.5:1 |
| 22 | Ada County | ID | 18.2:1 |
| 23 | Elmore County | ID | 18.2:1 |
| 24 | Canyon County | ID | 18.3:1 |
| 25 | Kootenai County | ID | 18.4:1 |
| 26 | Bannock County | ID | 18.8:1 |
| 27 | Boundary County | ID | 19.1:1 |
| 28 | Bingham County | ID | 19.3:1 |
| 29 | Cassia County | ID | 19.3:1 |
| 30 | Jefferson County | ID | 19.4:1 |
| 31 | Bonneville County | ID | 19.5:1 |
| 32 | Franklin County | ID | 19.6:1 |
| 33 | Minidoka County | ID | 19.6:1 |
| 34 | Madison County | ID | 21.0:1 |
| 35 | Oneida County | ID | 30.7:1 |