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County rankings · Lowest ratio

California: the counties with the lowest student-to-teacher ratios

55 counties

California 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.

#CountyStateSchoolsStudentsRatio
1Mono CountyCA111,44615.5:1
2Inyo CountyCA192,53916.0:1
3Siskiyou CountyCA436,05916.7:1
4Trinity CountyCA171,46116.7:1
5Plumas CountyCA132,04917.2:1
6Mariposa CountyCA151,89317.5:1
7Mendocino CountyCA6312,73817.8:1
8Humboldt CountyCA9117,31918.1:1
9Tuolumne CountyCA255,72418.6:1
10Marin CountyCA7129,86718.9:1
11Colusa CountyCA214,73219.2:1
12Lassen CountyCA223,75719.4:1
13Glenn CountyCA216,25219.6:1
14San Mateo CountyCA16982,40319.7:1
15Butte CountyCA8729,73019.8:1
16Madera CountyCA7632,25119.8:1
17Shasta CountyCA9026,63919.8:1
18Tehama CountyCA4010,94819.8:1
19Nevada CountyCA4113,56119.9:1
20Sonoma CountyCA17063,38919.9:1
21Del Norte CountyCA144,00320.0:1
22Santa Barbara CountyCA12066,19120.4:1
23Fresno CountyCA352206,07220.7:1
24San Luis Obispo CountyCA8233,33920.7:1
25Yuba CountyCA4116,04520.8:1
26Lake CountyCA3810,16720.9:1
27Santa Clara CountyCA401230,05920.9:1
28Yolo CountyCA6229,82020.9:1
29Imperial CountyCA7236,51321.0:1
30Tulare CountyCA192101,49421.0:1
31Kings CountyCA6328,74221.1:1
32San Francisco CountyCA12456,50521.1:1
33Santa Cruz CountyCA7936,31621.1:1
34Sutter CountyCA4323,78421.1:1
35Los Angeles CountyCA2,1741,265,90721.3:1
36Monterey CountyCA14073,84521.3:1
37Alameda CountyCA373210,51121.5:1
38Merced CountyCA10759,45621.6:1
39Napa CountyCA4018,55721.7:1
40Stanislaus CountyCA184106,47721.7:1
41Placer CountyCA11870,59021.9:1
42Amador CountyCA144,05022.0:1
43Calaveras CountyCA225,26122.0:1
44San Bernardino CountyCA563393,64822.0:1
45San Joaquin CountyCA243153,02622.0:1
46Kern CountyCA271197,43122.1:1
47Contra Costa CountyCA273167,42322.3:1
48El Dorado CountyCA6734,70622.3:1
49San Diego CountyCA749467,43722.3:1
50Ventura CountyCA228147,84122.5:1

See the national lowest ratio ranking →