The process of acquiring and analyzing data, then using it to make decisions. For example, expanding the use of a piloted learning tool to an entire grade level, school or school district only if it can be shown by pre- and post-assessments to improve student mastery.

A measure of the reliability and validity of an assessment tool.

A set of standard scores on a group test with nine bands of results. Results falling into bands 4, 5, and 6 represent average performance.

Converts the results on an assessment to a mean of 50 and a standard deviation of 10 for ease of interpretation of results.

Converts the results on an assessment to a mean of zero and a standard deviation of 1 for ease of interpretation of results.

A derived score statistically created as a measure of a total score on a standardized test or a subtest of the test.

A derived score statistically created to convert a child’s raw score to a measure that can be used to assess the child’s mastery of a specific topic or skill.

A derived score which shows the percent of students in the standardized test’s normative group which would have fallen at or below a particular raw score.

A derived score based on adjusting a student’s raw score on a standardized test by a factor that reflects normal performance for a particular grade.

A derived score based on adjusting a student’s raw score on a standardized test by a factor that reflects normal performance for a particular age.