Top 100 lowest student–teacher ratio in Idaho (2025)
Schools with the fewest students per FTE teacher, among schools with at least 100 students. Ordered by the measure shown, with the Success Index (US) for context; 100 schools shown.
- 128Challis JR/SR High SchoolChallis · Public HighStudents per teacher: 9.1
- 254Wallace JR/SR High SchoolWallace · Public HighStudents per teacher: 10.3
- 358Camas County Elem/JR High SchoolFairfield · Public ElementaryStudents per teacher: 10.5
- 460Notus JR/SR High SchoolCaldwell · Public HighStudents per teacher: 10.5
- 561Hailey Elementary SchoolHailey · Public ElementaryStudents per teacher: 10.8
- 649Raft River JR/SR High SchoolMalta · Public HighStudents per teacher: 11.0
- 752Forrest M Bird Charter SchoolSandpoint · Charter HighStudents per teacher: 11.1
- 859Bellevue Elementary SchoolBellevue · Public ElementaryStudents per teacher: 11.2
- 942Cascade JR/SR High SchoolCascade · Public HighStudents per teacher: 11.2
- 1022Lakeside Elementary SchoolPlummer · Public ElementaryStudents per teacher: 11.2
- 1123Lakeside High SchoolPlummer · Public HighStudents per teacher: 11.4
- 1253Idaho City High SchoolIdaho City · Public HighStudents per teacher: 11.5
- 1377Ernest Hemingway STEAM SchoolKetchum · Public ElementaryStudents per teacher: 11.6
- 1449Butte County Middle/High SchoolArco · Public HighStudents per teacher: 11.6
- 1569Wood River Middle SchoolHailey · Public MiddleStudents per teacher: 11.7
- 1644Council JR/SR High SchoolCouncil · Public HighStudents per teacher: 11.7
- 1743Lapwai Middle/High SchoolLapwai · Public HighStudents per teacher: 11.7
- 1866Frontier Elementary SchoolBoise · Public ElementaryStudents per teacher: 12.0
- 1941Kamiah Elementary SchoolKamiah · Public ElementaryStudents per teacher: 12.1
- 2057Kendrick JR/SR High SchoolKendrick · Public HighStudents per teacher: 12.1
- 2132Bickel Elementary SchoolTwin Falls · Public ElementaryStudents per teacher: 12.1
- 2245Kootenai JR/SR High SchoolHarrison · Public HighStudents per teacher: 12.3
- 2335Rimrock JR/SR High SchoolBruneau · Public HighStudents per teacher: 12.4
- 2474Rolling Hills Public CharterBoise · Charter ElementaryStudents per teacher: 12.6
- 2541Glenns Ferry Elementary SchoolGlenns Ferry · Public ElementaryStudents per teacher: 12.6
- 2642Idaho Connects Online SchoolNampa · Charter HighStudents per teacher: 12.7
- 2746Alturas Elementary SchoolHailey · Public ElementaryStudents per teacher: 12.7
- 2837Hansen JR/SR High SchoolHansen · Public HighStudents per teacher: 12.7
- 2956McMillan ElementaryBoise · Public ElementaryStudents per teacher: 12.7
- 3044Owyhee Elementary SchoolBoise · Public ElementaryStudents per teacher: 12.8
- 3138Kamiah Senior HighKamiah · Public HighStudents per teacher: 12.8
- 3240Clearwater Valley JR/SRKooskia · Public HighStudents per teacher: 13.0
- 3361Mackay JR/SR High SchoolMackay · Public HighStudents per teacher: 13.0
- 3477Donnelly ElementaryDonnelly · Public ElementaryStudents per teacher: 13.0
- 3541Timberline High SchoolWeippe · Public HighStudents per teacher: 13.0
- 3677Prairie Elementary SchoolCottonwood · Public ElementaryStudents per teacher: 13.1
- 3732Lincoln Elementary SchoolTwin Falls · Public ElementaryStudents per teacher: 13.1
- 3858Silver Sage Elementary SchoolBoise · Public ElementaryStudents per teacher: 13.2
- 3969Basin Elementary SchoolIdaho City · Public ElementaryStudents per teacher: 13.3
- 4030Challis Elementary SchoolChallis · Public ElementaryStudents per teacher: 13.3
- 4151Desert Sage Elementary SchoolBoise · Public ElementaryStudents per teacher: 13.3
- 4236I B Perrine Elementary SchoolTwin Falls · Public ElementaryStudents per teacher: 13.3
- 4348Webster Elementary SchoolLewiston · Public ElementaryStudents per teacher: 13.4
- 4428Chief Tahgee Elementary AcademyFort Hall · Charter ElementaryStudents per teacher: 13.6
- 4578Troy JR/SR High SchoolTroy · Public HighStudents per teacher: 13.7
- 4636Idaho Technical Career AcademyMeridian · Charter HighStudents per teacher: 13.7
- 4738Aberdeen Middle SchoolAberdeen · Public MiddleStudents per teacher: 13.8
- 4857Riverglen JR High SchoolBoise · Public MiddleStudents per teacher: 13.8
- 4955Oakley JR/SR High SchoolOakley · Public HighStudents per teacher: 13.8
- 5053Hansen Elementary SchoolHansen · Public ElementaryStudents per teacher: 13.8
- 5152Whitman Elementary SchoolLewiston · Public ElementaryStudents per teacher: 13.8
- 5275Lena Whitmore Elementary SchoolMoscow · Public ElementaryStudents per teacher: 13.8
- 5357Tendoy Elementary SchoolPocatello · Public ElementaryStudents per teacher: 13.8
- 5433William Thomas Middle SchoolAmerican Falls · Public MiddleStudents per teacher: 13.9
- 5532Donald D Stalker ElementaryBlackfoot · Public ElementaryStudents per teacher: 13.9
- 5626Garfield Elementary SchoolBoise · Public ElementaryStudents per teacher: 13.9
- 5743Ustick Elementary SchoolBoise · Public ElementaryStudents per teacher: 13.9
- 5834Wilson Elementary SchoolCaldwell · Public ElementaryStudents per teacher: 14.0
- 5955Silver Hills Elementary SchoolOsburn · Public ElementaryStudents per teacher: 14.0
- 6062West Park Elementary SchoolMoscow · Public ElementaryStudents per teacher: 14.1
- 6162ST Maries High SchoolST Maries · Public HighStudents per teacher: 14.1
- 6238Aberdeen High SchoolAberdeen · Public HighStudents per teacher: 14.2
- 6356Syringa Mountain Charter SchoolHailey · Charter ElementaryStudents per teacher: 14.2
- 6435Glenns Ferry High SchoolGlenns Ferry · Public HighStudents per teacher: 14.2
- 6562McSorley Elementary SchoolLewiston · Public ElementaryStudents per teacher: 14.2
- 6645Washington Elementary SchoolPocatello · Public ElementaryStudents per teacher: 14.2
- 6721Jefferson Elementary SchoolBoise · Public ElementaryStudents per teacher: 14.3
- 6855Arco Elementary SchoolArco · Public ElementaryStudents per teacher: 14.3
- 6950Orchards Elementary SchoolLewiston · Public ElementaryStudents per teacher: 14.3
- 7046Mackay Elementary SchoolMackay · Public ElementaryStudents per teacher: 14.3
- 7153Marsing Middle SchoolMarsing · Public MiddleStudents per teacher: 14.3
- 7270Lake Hazel Elementary SchoolBoise · Public ElementaryStudents per teacher: 14.3
- 7372Moscow Middle SchoolMoscow · Public MiddleStudents per teacher: 14.3
- 7441Shoshone High SchoolShoshone · Public HighStudents per teacher: 14.3
- 7533Aberdeen Elementary SchoolAberdeen · Public ElementaryStudents per teacher: 14.4
- 7616Fort Hall Elementary SchoolFort Hall · Public ElementaryStudents per teacher: 14.4
- 7761Wood River High SchoolHailey · Public HighStudents per teacher: 14.4
- 7837North Fremont JR/SR High SchoolAshton · Public HighStudents per teacher: 14.4
- 7948Hubbard Elementary SchoolKuna · Public ElementaryStudents per teacher: 14.4
- 8051McGhee Elementary SchoolLewiston · Public ElementaryStudents per teacher: 14.4
- 8128Shoshone Middle SchoolShoshone · Public MiddleStudents per teacher: 14.4
- 8230Sacajawea Elementary SchoolCaldwell · Public ElementaryStudents per teacher: 14.5
- 8341Kellogg High SchoolKellogg · Public HighStudents per teacher: 14.5
- 8456Hope Elementary SchoolHope · Public ElementaryStudents per teacher: 14.6
- 8556Pierce Park Elementary SchoolBoise · Public ElementaryStudents per teacher: 14.6
- 8653West Jefferson High SchoolTerreton · Public HighStudents per teacher: 14.6
- 8726Wilder High SchoolWilder · Public HighStudents per teacher: 14.6
- 8854Groveland Elementary SchoolBlackfoot · Public ElementaryStudents per teacher: 14.7
- 8949Hawthorne Elementary SchoolBoise · Public ElementaryStudents per teacher: 14.7
- 9061Cascade Elementary SchoolCascade · Public ElementaryStudents per teacher: 14.7
- 9138Heyburn Elementary SchoolST Maries · Public ElementaryStudents per teacher: 14.7
- 9227South Junior High SchoolBoise · Public MiddleStudents per teacher: 14.8
- 9367Summerwind STEM AcademyBoise · Public ElementaryStudents per teacher: 14.8
- 9468Orofino Elementary SchoolOrofino · Public ElementaryStudents per teacher: 14.8
- 9547Juliaetta Elementary SchoolJuliaetta · Public ElementaryStudents per teacher: 14.9
- 9643Potlatch Elementary SchoolPotlatch · Public ElementaryStudents per teacher: 14.9
- 9755Potlatch JR/SR High SchoolPotlatch · Public HighStudents per teacher: 14.9
- 9862Moreland Elementary SchoolBlackfoot · Public ElementaryStudents per teacher: 14.9
- 9950Snake River JR High SchoolBlackfoot · Public MiddleStudents per teacher: 14.9
- 10036Driggs Elementary SchoolDriggs · Public ElementaryStudents per teacher: 14.9
| # | School | Sector | Students per teacher | Success Index (US) | Key result | Students |
|---|---|---|---|---|---|---|
| 1 | Challis JR/SR High School Challis · High · Grades 7–12 | Public | 9.1 | 27.5 Lower 50% | 7.5% Math proficiency | 136 |
| 2 | Wallace JR/SR High School Wallace · High · Grades 7–12 | Public | 10.3 | 53.9 Top 50% | 37% Math proficiency | 195 |
| 3 | Camas County Elem/JR High School Fairfield · Elementary · Grades PK–8 | Public | 10.5 | 57.9 Top 50% | 42% Math proficiency | 105 |
| 4 | Notus JR/SR High School Caldwell · High · Grades 7–12 | Public | 10.5 | 59.5 Top 50% | 47% Math proficiency | 157 |
| 5 | Hailey Elementary School Hailey · Elementary · Grades PK–5 | Public | 10.8 | 60.8 Top 50% | 47% Math proficiency | 291 |
| 6 | Raft River JR/SR High School Malta · High · Grades 7–12 | Public | 11.0 | 48.5 Lower 50% | 27% Math proficiency | 154 |
| 7 | Forrest M Bird Charter School Sandpoint · High · Grades 6–12 | Charter | 11.1 | 52.4 Top 50% | 32% Math proficiency | 255 |
| 8 | Bellevue Elementary School Bellevue · Elementary · Grades PK–5 | Public | 11.2 | 59.1 Top 50% | 42% Math proficiency | 223 |
| 9 | Cascade JR/SR High School Cascade · High · Grades 6–12 | Public | 11.2 | 42.4 Lower 50% | 24.5% Math proficiency | 112 |
| 10 | Lakeside Elementary School Plummer · Elementary · Grades PK–5 | Public | 11.2 | 21.6 Lower 50% | 7.5% Math proficiency | 146 |
| 11 | Lakeside High School Plummer · High · Grades 9–12 | Public | 11.4 | 23.3 Lower 50% | 10% Math proficiency | 125 |
| 12 | Idaho City High School Idaho City · High · Grades 7–12 | Public | 11.5 | 53.3 Top 50% | 37% Math proficiency | 126 |
| 13 | Ernest Hemingway STEAM School Ketchum · Elementary · Grades PK–8 | Public | 11.6 | 77.0 Top 25% | 55% Math proficiency | 431 |
| 14 | Butte County Middle/High School Arco · High · Grades 7–12 | Public | 11.6 | 48.7 Lower 50% | 27% Math proficiency | 186 |
| 15 | Wood River Middle School Hailey · Middle · Grades 6–8 | Public | 11.7 | 69.3 Top 25% | 49% Math proficiency | 467 |
| 16 | Council JR/SR High School Council · High · Grades 7–12 | Public | 11.7 | 44.2 Lower 50% | 32% Math proficiency | 117 |
| 17 | Lapwai Middle/High School Lapwai · High · Grades 6–12 | Public | 11.7 | 43.3 Lower 50% | 12% Math proficiency | 246 |
| 18 | Frontier Elementary School Boise · Elementary · Grades PK–5 | Public | 12.0 | 65.6 Top 50% | 52% Math proficiency | 263 |
| 19 | Kamiah Elementary School Kamiah · Elementary · Grades PK–3 | Public | 12.1 | 40.6 Lower 50% | 30% Math proficiency | 121 |
| 20 | Kendrick JR/SR High School Kendrick · High · Grades 7–12 | Public | 12.1 | 56.6 Top 50% | 34.5% Math proficiency | 133 |
| 21 | Bickel Elementary School Twin Falls · Elementary · Grades PK–5 | Public | 12.1 | 31.8 Lower 50% | 27% Math proficiency | 169 |
| 22 | Kootenai JR/SR High School Harrison · High · Grades 6–12 | Public | 12.3 | 44.7 Lower 50% | 24.5% Math proficiency | 111 |
| 23 | Rimrock JR/SR High School Bruneau · High · Grades 6–12 | Public | 12.4 | 34.6 Lower 50% | 22% Math proficiency | 136 |
| 24 | Rolling Hills Public Charter Boise · Elementary · Grades K–8 | Charter | 12.6 | 73.8 Top 25% | 57% Math proficiency | 176 |
| 25 | Glenns Ferry Elementary School Glenns Ferry · Elementary · Grades PK–5 | Public | 12.6 | 40.8 Lower 50% | 37% Math proficiency | 139 |
| 26 | Idaho Connects Online School Nampa · High · Grades 6–12 | Charter | 12.7 | 42.2 Lower 50% | 24.5% Math proficiency | 165 |
| 27 | Alturas Elementary School Hailey · Elementary · Grades PK–5 | Public | 12.7 | 45.7 Lower 50% | 34% Math proficiency | 445 |
| 28 | Hansen JR/SR High School Hansen · High · Grades 7–12 | Public | 12.7 | 37.0 Lower 50% | 27% Math proficiency | 127 |
| 29 | McMillan Elementary Boise · Elementary · Grades PK–5 | Public | 12.7 | 55.6 Top 50% | 47% Math proficiency | 241 |
| 30 | Owyhee Elementary School Boise · Elementary · Grades PK–6 | Public | 12.8 | 43.6 Lower 50% | 42% Math proficiency | 167 |
| 31 | Kamiah Senior High Kamiah · High · Grades 9–12 | Public | 12.8 | 37.8 Lower 50% | 15% Math proficiency | 102 |
| 32 | Clearwater Valley JR/SR Kooskia · High · Grades 7–12 | Public | 13.0 | 39.5 Lower 50% | 32% Math proficiency | 169 |
| 33 | Mackay JR/SR High School Mackay · High · Grades 7–12 | Public | 13.0 | 61.3 Top 50% | 34.5% Math proficiency | 104 |
| 34 | Donnelly Elementary Donnelly · Elementary · Grades PK–5 | Public | 13.0 | 77.3 Top 25% | 62% Math proficiency | 156 |
| 35 | Timberline High School Weippe · High · Grades 6–12 | Public | 13.0 | 40.6 Lower 50% | 27% Math proficiency | 104 |
| 36 | Prairie Elementary School Cottonwood · Elementary · Grades PK–6 | Public | 13.1 | 77.4 Top 25% | 67% Math proficiency | 222 |
| 37 | Lincoln Elementary School Twin Falls · Elementary · Grades PK–5 | Public | 13.1 | 31.5 Lower 50% | 25% Math proficiency | 327 |
| 38 | Silver Sage Elementary School Boise · Elementary · Grades PK–5 | Public | 13.2 | 57.8 Top 50% | 52% Math proficiency | 250 |
| 39 | Basin Elementary School Idaho City · Elementary · Grades PK–6 | Public | 13.3 | 69.4 Top 25% | 62% Math proficiency | 173 |
| 40 | Challis Elementary School Challis · Elementary · Grades PK–6 | Public | 13.3 | 30.4 Lower 50% | 22% Math proficiency | 173 |
| 41 | Desert Sage Elementary School Boise · Elementary · Grades PK–5 | Public | 13.3 | 51.4 Top 50% | 48% Math proficiency | 477 |
| 42 | I B Perrine Elementary School Twin Falls · Elementary · Grades PK–5 | Public | 13.3 | 35.5 Lower 50% | 33% Math proficiency | 359 |
| 43 | Webster Elementary School Lewiston · Elementary · Grades PK–5 | Public | 13.4 | 48.2 Lower 50% | 37% Math proficiency | 214 |
| 44 | Chief Tahgee Elementary Academy Fort Hall · Elementary · Grades K–7 | Charter | 13.6 | 28.3 Lower 50% | 24.5% Math proficiency | 109 |
| 45 | Troy JR/SR High School Troy · High · Grades 7–12 | Public | 13.7 | 78.1 Top 10% | 64.5% Math proficiency | 151 |
| 46 | Idaho Technical Career Academy Meridian · High · Grades 9–12 | Charter | 13.7 | 36.1 Lower 50% | 15% Math proficiency | 137 |
| 47 | Aberdeen Middle School Aberdeen · Middle · Grades 6–8 | Public | 13.8 | 38.2 Lower 50% | 37% Math proficiency | 138 |
| 48 | Riverglen JR High School Boise · Middle · Grades 7–9 | Public | 13.8 | 57.3 Top 50% | 40% Math proficiency | 497 |
| 49 | Oakley JR/SR High School Oakley · High · Grades 7–12 | Public | 13.8 | 55.1 Top 50% | 37% Math proficiency | 179 |
| 50 | Hansen Elementary School Hansen · Elementary · Grades PK–6 | Public | 13.8 | 52.5 Top 50% | 47% Math proficiency | 179 |
| 51 | Whitman Elementary School Lewiston · Elementary · Grades PK–5 | Public | 13.8 | 52.0 Top 50% | 42% Math proficiency | 332 |
| 52 | Lena Whitmore Elementary School Moscow · Elementary · Grades K–5 | Public | 13.8 | 74.7 Top 25% | 62% Math proficiency | 248 |
| 53 | Tendoy Elementary School Pocatello · Elementary · Grades K–5 | Public | 13.8 | 56.9 Top 50% | 52% Math proficiency | 221 |
| 54 | William Thomas Middle School American Falls · Middle · Grades 6–8 | Public | 13.9 | 32.5 Lower 50% | 20% Math proficiency | 333 |
| 55 | Donald D Stalker Elementary Blackfoot · Elementary · Grades PK–5 | Public | 13.9 | 32.4 Lower 50% | 27% Math proficiency | 237 |
| 56 | Garfield Elementary School Boise · Elementary · Grades PK–6 | Public | 13.9 | 25.8 Lower 50% | 26% Math proficiency | 278 |
| 57 | Ustick Elementary School Boise · Elementary · Grades PK–5 | Public | 13.9 | 42.5 Lower 50% | 38% Math proficiency | 389 |
| 58 | Wilson Elementary School Caldwell · Elementary · Grades PK–4 | Public | 14.0 | 33.9 Lower 50% | 36% Math proficiency | 406 |
| 59 | Silver Hills Elementary School Osburn · Elementary · Grades PK–6 | Public | 14.0 | 55.3 Top 50% | 52% Math proficiency | 294 |
| 60 | West Park Elementary School Moscow · Elementary · Grades K–5 | Public | 14.1 | 61.5 Top 50% | 47.1% Free/reduced-price lunch | 240 |
| 61 | ST Maries High School ST Maries · High · Grades 9–12 | Public | 14.1 | 61.6 Top 50% | 42% Math proficiency | 282 |
| 62 | Aberdeen High School Aberdeen · High · Grades 9–12 | Public | 14.2 | 38.4 Lower 50% | 24.5% Math proficiency | 213 |
| 63 | Syringa Mountain Charter School Hailey · Elementary · Grades K–8 | Charter | 14.2 | 56.0 Top 50% | 52% Math proficiency | 128 |
| 64 | Glenns Ferry High School Glenns Ferry · High · Grades 9–12 | Public | 14.2 | 35.0 Lower 50% | 10% Math proficiency | 128 |
| 65 | McSorley Elementary School Lewiston · Elementary · Grades K–5 | Public | 14.2 | 61.5 Top 50% | 52% Math proficiency | 242 |
| 66 | Washington Elementary School Pocatello · Elementary · Grades K–5 | Public | 14.2 | 44.9 Lower 50% | 42% Math proficiency | 242 |
| 67 | Jefferson Elementary School Boise · Elementary · Grades PK–6 | Public | 14.3 | 21.4 Lower 50% | 27% Math proficiency | 228 |
| 68 | Arco Elementary School Arco · Elementary · Grades PK–6 | Public | 14.3 | 54.8 Top 50% | 47% Math proficiency | 186 |
| 69 | Orchards Elementary School Lewiston · Elementary · Grades K–5 | Public | 14.3 | 49.9 Lower 50% | 42% Math proficiency | 257 |
| 70 | Mackay Elementary School Mackay · Elementary · Grades PK–6 | Public | 14.3 | 46.1 Lower 50% | 42% Math proficiency | 114 |
| 71 | Marsing Middle School Marsing · Middle · Grades 6–8 | Public | 14.3 | 53.1 Top 50% | 46% Math proficiency | 200 |
| 72 | Lake Hazel Elementary School Boise · Elementary · Grades PK–5 | Public | 14.3 | 69.5 Top 25% | 61% Math proficiency | 328 |
| 73 | Moscow Middle School Moscow · Middle · Grades 6–8 | Public | 14.3 | 72.1 Top 25% | 50% Math proficiency | 500 |
| 74 | Shoshone High School Shoshone · High · Grades 9–12 | Public | 14.3 | 41.2 Lower 50% | 30% Math proficiency | 143 |
| 75 | Aberdeen Elementary School Aberdeen · Elementary · Grades PK–5 | Public | 14.4 | 32.5 Lower 50% | 37% Math proficiency | 274 |
| 76 | Fort Hall Elementary School Fort Hall · Elementary · Grades PK–5 | Public | 14.4 | 16.0 Lower 50% | 2.5% Math proficiency | 101 |
| 77 | Wood River High School Hailey · High · Grades 9–12 | Public | 14.4 | 61.4 Top 50% | 35% Math proficiency | 922 |
| 78 | North Fremont JR/SR High School Ashton · High · Grades 6–12 | Public | 14.4 | 37.3 Lower 50% | 27% Math proficiency | 316 |
| 79 | Hubbard Elementary School Kuna · Elementary · Grades PK–3 | Public | 14.4 | 48.1 Lower 50% | 42% Math proficiency | 202 |
| 80 | McGhee Elementary School Lewiston · Elementary · Grades K–5 | Public | 14.4 | 50.7 Top 50% | 42% Math proficiency | 259 |
| 81 | Shoshone Middle School Shoshone · Middle · Grades 6–8 | Public | 14.4 | 27.5 Lower 50% | 22% Math proficiency | 115 |
| 82 | Sacajawea Elementary School Caldwell · Elementary · Grades K–4 | Public | 14.5 | 29.7 Lower 50% | 25% Math proficiency | 362 |
| 83 | Kellogg High School Kellogg · High · Grades 9–12 | Public | 14.5 | 40.7 Lower 50% | 17% Math proficiency | 289 |
| 84 | Hope Elementary School Hope · Elementary · Grades PK–6 | Public | 14.6 | 55.8 Top 50% | 47% Math proficiency | 117 |
| 85 | Pierce Park Elementary School Boise · Elementary · Grades PK–6 | Public | 14.6 | 56.0 Top 50% | 42% Math proficiency | 233 |
| 86 | West Jefferson High School Terreton · High · Grades 9–12 | Public | 14.6 | 52.5 Top 50% | 34.5% Math proficiency | 204 |
| 87 | Wilder High School Wilder · High · Grades 9–12 | Public | 14.6 | 26.2 Lower 50% | 5% Math proficiency | 131 |
| 88 | Groveland Elementary School Blackfoot · Elementary · Grades PK–5 | Public | 14.7 | 53.7 Top 50% | 47% Math proficiency | 220 |
| 89 | Hawthorne Elementary School Boise · Elementary · Grades PK–6 | Public | 14.7 | 49.2 Lower 50% | 57% Math proficiency | 264 |
| 90 | Cascade Elementary School Cascade · Elementary · Grades PK–5 | Public | 14.7 | 61.2 Top 50% | 54.5% Math proficiency | 103 |
| 91 | Heyburn Elementary School ST Maries · Elementary · Grades PK–5 | Public | 14.7 | 38.0 Lower 50% | 27% Math proficiency | 339 |
| 92 | South Junior High School Boise · Middle · Grades 7–9 | Public | 14.8 | 26.8 Lower 50% | 27% Math proficiency | 533 |
| 93 | Summerwind STEM Academy Boise · Elementary · Grades PK–5 | Public | 14.8 | 66.8 Top 50% | 56% Math proficiency | 370 |
| 94 | Orofino Elementary School Orofino · Elementary · Grades PK–6 | Public | 14.8 | 68.2 Top 25% | 63% Math proficiency | 356 |
| 95 | Juliaetta Elementary School Juliaetta · Elementary · Grades PK–6 | Public | 14.9 | 47.4 Lower 50% | 42% Math proficiency | 134 |
| 96 | Potlatch Elementary School Potlatch · Elementary · Grades PK–6 | Public | 14.9 | 43.1 Lower 50% | 32% Math proficiency | 239 |
| 97 | Potlatch JR/SR High School Potlatch · High · Grades 7–12 | Public | 14.9 | 54.5 Top 50% | 32% Math proficiency | 209 |
| 98 | Moreland Elementary School Blackfoot · Elementary · Grades PK–1 | Public | 14.9 | 62.3 Top 50% | 41.6% Free/reduced-price lunch | 238 |
| 99 | Snake River JR High School Blackfoot · Middle · Grades 7–8 | Public | 14.9 | 50.4 Top 50% | 29% Math proficiency | 284 |
| 100 | Driggs Elementary School Driggs · Elementary · Grades PK–3 | Public | 14.9 | 35.7 Lower 50% | 27% Math proficiency | 328 |
Challis JR/SR High School in Challis leads the 2025 list of lowest student–teacher ratio in Idaho with Students per teacher 9.1. Of the 100 schools shown, 94 are public, 6 are charter.
Use the rankings to build a shortlist, then visit the schools and ask how they support students at your child's level.
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Frequently asked questions
What is the best ratio school in Idaho?
Challis JR/SR High School in Challis ranks first among lowest student–teacher ratio in Idaho with Students per teacher 9.1 (Enrollment: 136).
How are lowest student–teacher ratio in Idaho ranked?
Schools with the fewest students per FTE teacher, among schools with at least 100 students. Only schools eligible for the Success Index (US) are included; the index is shown alongside for context.
Are these 2025 rankings official?
No. They are computed by Success Tutoring from official American data (Urban Institute Education Data Portal (NCES CCD, EDFacts); NCES Common Core of Data). States set their own assessments and proficiency cut scores, so proficiency rates are most comparable within a state. Use the state rankings for like-for-like comparisons.