The document discusses a Table of Specifications (TOS), which is a plan prepared by teachers to ensure tests measure intended content and skills. It provides evidence of content validity and helps teachers identify needed test items. To construct a TOS, teachers secure learning competencies, indicate days spent on each competency, determine the number of test items for each using a formula, and distribute items across cognitive skill levels (e.g. remembering, understanding, applying). The TOS helps ensure tests are valid and measure the intended outcomes.