Validity is the degree to which a test measures what is supposed to be measured. The quality of a test depends on its validity. It is the most central and essential quality in the development, interpretation, and use of educational measures. The most important quality of good measuring assessment refers to the degree to which a test measures what it intends to measure.
The following are the types of validity in assessment. These are content validity, construct validity, concurrent validity, predictive validity, and face validity.