Interactive Map: Are California class sizes increasing?

A California Watch survey of the state's 30 largest, K-12 school districts found that class sizes in kindergarten through third grade are increasing beyond 20 in many districts.

In general, the figures in this map refer to teacher-student ratios set by the district for the 2009-10 school year. Actual class size may vary at individual schools depending on enrollments and attendance. District officials provided all responses.