Now that California’s ranking system for public schools—using the Academic Performance Index, or API—has been in place for three years, the state has data to track the progress of most schools.

This EdFact summarizes the EdSource report, California's Lowest Performing Schools: who they are, the challenges they face, and how they're improving, which takes a close look at the first cohort of California’s bottom ranking schools, and their progress. It also explores some factors that may be contributing to these schools' improvement.