Academic Performance Index (API)
A number, used for school accountability purposes, summarizing the performance of a group of students, a school, or a district on California's standardized tests. A school's number (or API score) is used to rank it among schools of the same type (elementary, middle, high) and among the 100 schools of the same type that are most similar in terms of students served, teacher qualifications, and other factors. Schools and districts also receive separate API scores for “numerically significant” student groups, including ethnic subgroups, socioeconomically disadvantaged students, English learners, and students with disabilities.
