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The California Science Test (CAST) is part of California's system of assessments called the California Assessment of Student Performance and Progress (CAASPP). The CAST measures what students know and can do using the California.

CAST Scale Score Ranges GradeMinimum Scale ScoreAchievement Level Scale Score Range for Standard Exceeded (Level 4)5150231–2508350433–450High School (Grades 10–12)550636–650 Nov 19, 2021

The CAST assesses the student's ability to think critically and solve problems. This assessment uses questions that bring together science content, practices, and concepts. It also covers all three science domains: Life Sciences, Physical Sciences, and Earth and Space Sciences.

Note that the CAST is an untimed test, but almost all students should complete it within one to two hours. In addition, students will take a brief survey at the end of the test before exiting the test delivery system. The survey is estimated to take an additional five to seven minutes.

The CAST general ALDs describe a student's performance in terms of the four CAST achievement levels (i.e., standard exceeded, standard met, standard nearly met, and standard not met).

Student Participation: The CAST is required for all students in grades five and eight and once in high school (i.e., grade ten, eleven, or twelve) unless their IEP indicates assessment with an alternate test.

The CAASPP test assesses how well students are learning new and rigorous state standards designed to prepare them for college coursework and 21st-century careers. CAASPP scores measure different skills in a different way and cannot be compared to the STAR scoring system.

The California Assessment of Student Performance and Progress (CAASPP) is the state academic testing program. CAASPP is a system intended to provide information that can be used to monitor student progress and ensure that all students leave high school ready for college and career.