The New York State Department of Education (NYSED) has a partnership with Questar Assessment Inc. (Questar) for the development of the 2020 Grades 3-8 Mathematics Tests. Teachers from across the State work with NYSED in a variety of activities to ensure the validity and reliability of the New York State Testing Program (NYSTP). The 2020 Grades 6-8 Mathematics Tests are administered in two sessions on two consecutive school days. Students will have as much time as they need each day to answer the questions in the test sessions within the confines of the regular school day. For all three grades, the tests consist of multiple-choice (1-point) and short- (2-point) and extended-response (3-point) questions. Each multiple-choice question is followed by four choices, one of which is the correct answer. Students record their responses on a separate answer sheet. The short- and extended-response questions require students to write (rather than select) appropriate responses. Students write their answers to these questions directly in their test booklets. This document provides guidelines to help teachers ensure that the tests are valid, reliable, and equitable for all students. A series of instructions helps teachers organize the materials and the testing schedule. [For "New York State Testing Program: 2020 Grades 3-5 Mathematics Paper-Based Tests. Teacher's Directions (April 21-23, 2020)," see ED606135.]