How Is the Academic Performance Index Calculated?

Purpose

The API, or Academic Performance Index, is a process used in California to determine the performance and growth of schools and districts based on test scores on grades 2 through 11. The API is measured based on a 2-year cycle: the first year a base score is calculated, and in the second year growth is measured. A school's scores are then compared statewide and to other schools with similar factors.

Tests

The schools are scored based primarily on the STAR, or Standardized Testing and Reporting test. This test is composed of six different types, each given depending on the type of student. In addition, students can be tested with the CAHSEE, or California High School Exit Exam. Along with test scores, schools can be examined based on their attendance and graduation rate. Students can be excused from testing if they haven't attended a full school year, are excused by their parents or are unfit for testing in another way.

Ranking

The API is measured with numbers between 200 and 1000, with 800 being the goal. The score is adjusted based upon "numerically significant subgroups" made up of disabled or otherwise disadvantaged students. Schools are then compared with schools of the same level on a scale of 1 to 10, both statewide and only with schools of similar types of students.

References

• Components of the API
• Understanding the API
• Testing in California: An Overview

Resources

• Academic Performance Index Reports