Test Results Definitions
Number Enrolled—A count of students in the selected entity (i.e., state, county, district, school, or student group)
who were eligible to take the CAST in grades 5, 8, and HS (grades 10, 11, and 12).
Number Tested—A count of students in the selected entity (i.e., state, county, district, school, or student group)
who were administered the CAST. This number excludes students not tested by parent/guardian request, students not tested due to a
significant medical emergency, and students who were assigned to take the test, but did not test.
Number of Tests with Valid Scores—A count of students tested in the selected entity
(i.e., state, county, district, school, or student group) and responded to enough questions on the test
to generate a valid score. Scores that are invalidated are not included in this aggregation.
Mean Scale Score—The sum of scale scores for students with valid scores in the selected entity (i.e., state, county,
district, school, or student group) divided by the Number of Tests with Valid Scores.
For more information, please visit the Scale Score Ranges page.
CAST Reporting Domain Descriptors
Area (Science Domain) Descriptors
The above, near, and below standard categories were identified by using the distance a student's performance
on the questions related to that science domain is from the Level 3 "Standard Met" achievement level criterion.
The science domain achievement category indicates the score on a science domain as follows:
- If the scale score of a science domain is above the "Standard Met" achievement level on the overall CAST, the achievement category for the science domain is "Above Standard."
- If the scale score of a science domain is at or near the "Standard Met" achievement level on the overall CAST, the achievement category for the science domain is "Near Standard."
- If the scale score of a science domain is below the "Standard Met" achievement level on the overall CAST, the achievement category for the science domain is "Below Standard."