The smallest student-teacher ratios in California
Better student-teacher ratios don't always mean better schools. Here are the best district ratios in California.
Student-Teacher Ratio vs. Reading
Across California districts with ratio data, larger student-teacher ratios are associated with somewhat higher reading scores, but the relationship is weak.
Large Districts with ratios under 20:1
The smallest student-teacher ratios among districts with at least 2,000 students.
San Bernardino County • Elementary | 17:1 | 31.9% | 19.9% | 2,357 |
County • | 17:1 | 38.9% | 25.1% | 3,243 |
San Mateo County • High | 17:1 | 66.2% | 48.2% | 9,408 |
Alameda County • Unified | 17:1 | 84.7% | 82.2% | 2,447 |
San Bernardino County • Unified | 17:1 | 49.0% | 31.0% | 2,183 |
Alameda County • Unified | 17:1 | 71.6% | 66.3% | 9,116 |
Kern County • Elementary | 17:1 | 30.4% | 21.3% | 2,490 |
Orange County • Unified | 17:1 | 77.5% | 72.1% | 2,279 |
San Diego County • Unified | 17:1 | 26.1% | 13.1% | 4,397 |
County • | 17:1 | 6.2% | 1.3% | 2,760 |
Sacramento County • Unified | 16:1 | 33.8% | 22.4% | 2,030 |
County • | 16:1 | 6.2% | 2.7% | 5,495 |
County • | 16:1 | 50.2% | 36.3% | 2,405 |
Marin County • Elementary | 16:1 | 82.6% | 79.2% | 2,309 |
County • | 16:1 | 29.8% | 15.6% | 6,321 |
San Mateo County • Elementary | 16:1 | 79.6% | 78.1% | 2,682 |
Santa Clara County • Unified | 16:1 | 82.3% | 79.6% | 10,187 |
County • | 15:1 | 6.2% | 5.5% | 2,404 |
County • | 15:1 | 5.0% | 3.4% | 3,369 |
County • | 15:1 | 10.5% | 0.9% | 4,278 |
Los Angeles County • Unified | 14:1 | 71.1% | 62.8% | 3,661 |
Monterey County • Unified | 14:1 | 73.2% | 65.8% | 2,152 |
Los Angeles County • Elementary | 14:1 | 21.5% | 16.2% | 3,225 |
County • | 12:1 | 42.5% | 30.7% | 3,660 |
San Diego County • Unified | 12:1 | 28.4% | 25.7% | 3,258 |
Medium Districts with ratios under 20:1
The smallest student-teacher ratios among districts with 1,000-1,999 students.
Tulare County • Elementary | 17:1 | 26.4% | 11.3% | 1,383 |
Mendocino County • Unified | 17:1 | 29.9% | 16.4% | 1,750 |
Shasta County • Unified | 17:1 | 39.8% | 30.6% | 1,156 |
Sonoma County • Elementary | 17:1 | 55.9% | 40.3% | 1,236 |
Mendocino County • Unified | 17:1 | 19.8% | 10.7% | 1,852 |
Los Angeles County • Elementary | 17:1 | 54.7% | 41.3% | 1,303 |
Imperial County • Unified | 17:1 | 52.8% | 33.3% | 1,574 |
Fresno County • Elementary | 17:1 | 44.4% | 24.4% | 1,801 |
Fresno County • Unified | 17:1 | 36.1% | 24.4% | 1,426 |
Monterey County • Unified | 16:1 | 71.8% | 60.2% | 1,749 |
Glenn County • Unified | 16:1 | 26.6% | 20.9% | 1,399 |
Imperial County • Unified | 16:1 | 38.4% | 23.0% | 1,080 |
Mono County • Unified | 16:1 | 41.5% | 34.4% | 1,087 |
Marin County • Elementary | 16:1 | 78.7% | 76.1% | 1,014 |
Humboldt County • Elementary | 16:1 | 31.9% | 22.3% | 1,238 |
Sonoma County • Unified | 16:1 | 55.5% | 40.5% | 1,221 |
San Mateo County • Elementary | 15:1 | 83.6% | 83.2% | 1,134 |
County • | 15:1 | 21.7% | 6.8% | 1,878 |
Marin County • Elementary | 15:1 | 80.9% | 78.9% | 1,043 |
Humboldt County • Elementary | 14:1 | 41.5% | 29.9% | 1,174 |
County • | 14:1 | 17.0% | 3.4% | 1,894 |
County • | 14:1 | 18.4% | 10.9% | 1,290 |
San Mateo County • Elementary | 13:1 | 84.7% | 85.8% | 1,239 |
Napa County • Unified | 13:1 | 58.6% | 42.6% | 1,104 |
County • | 13:1 | 4.9% | 2.4% | 1,075 |
Small Districts with ratios under 20:1
The smallest student-teacher ratios among districts with fewer than 1,000 students.
County • | 10:1 | 7.1% | 0.0% | 190 |
County • | 10:1 | 12.0% | 6.4% | 23 |
County • | 10:1 | 12.5% | 6.3% | 40 |
Marin County • Unified | 10:1 | 35.2% | 31.8% | 469 |
County • | 10:1 | 4.5% | 0.0% | 483 |
Riverside County • Unified | 10:1 | 42.9% | 42.9% | 29 |
County • | 10:1 | 1.7% | 3.1% | 498 |
Alpine County • Unified | 10:1 | 42.9% | 31.3% | 57 |
County • | 10:1 | 15.9% | 7.9% | 284 |
Humboldt County • Elementary | 9:1 | 50.0% | 31.3% | 24 |
Trinity County • Unified | 9:1 | 52.5% | 37.5% | 72 |
Mendocino County • Unified | 9:1 | 54.4% | 33.8% | 111 |
Sonoma County • Elementary | 8:1 | 36.0% | 18.9% | 396 |
Sonoma County • Elementary | 8:1 | 46.1% | 38.5% | 23 |
Mendocino County • Elementary | 7:1 | 23.8% | 4.8% | 34 |
Sonoma County • Elementary | 7:1 | 38.5% | 15.4% | 20 |
Inyo County • Unified | 7:1 | 35.0% | 25.0% | 21 |
Glenn County • Unified | 7:1 | 32.1% | 28.6% | 83 |
Siskiyou County • High | 7:1 | 20.0% | 13.3% | 61 |
County • | 7:1 | 12.0% | 3.9% | 77 |
County • | 5:1 | 4.7% | 3.1% | 350 |
County • | 5:1 | 22.2% | 6.3% | 42 |
County • | 4:1 | 11.4% | 4.2% | 279 |
Lassen County • Elementary | 3:1 | 40.0% | 47.0% | 3 |
San Bernardino County • Elementary | 1:1 | 58.3% | 40.0% | 1 |