|About SchoolDigger rankings
Ranking updates are approximately yearly, usually the same day the California Department of Education releases their test scores. Last update for California was September 9, 2015.
- Districts are ranked by averaging each school's rank percentile to create an overall rank score. See the
for detailed information about how SchoolDigger.com ranks schools and districts.
National Center for Education Statistics, U.S. Dept of Education and California Department of Education