What is Table of Specification

The table of specifications (TOS) is a tool used to ensure that a test or assessment measures the content and thinking skills that the test intends to measure. Thus, when used appropriately, it can provide response content and construct (i.e., response process) validity evidence. A TOS may be used for large-scale test construction, classroom-level assessments by teachers, and psychometric scale development. It is a foundational tool in designing tests
or measures for research and educational purposes.