This study aimed to provide evidence for the reliability and validity of the "Systems Coaching Survey (SCS)." Systems coaching is an approach to building capacity among groups of educators to drive educational reform efforts by employing seven interdependent sets of skills (interpersonal communication, data-based problem solving, team facilitation, content knowledge dissemination, leadership, professional learning, evaluation). The "SCS" was designed to measure educators' skills to facilitate implementation of a multi-tiered system of supports (MTSS). The 41-item survey was piloted nationally in the spring of 2017 by 1,060 educators across 180 schools in six U.S. states who had responsibilities for facilitating MTSS practices in their schools. This study used multilevel confirmatory factor analysis to examine the construct validity and reliability of the tool at the educator and school levels. Results indicated support for seven factors at the educator level representing the seven systems coaching skill sets, and one between-level factor labeled "School Context." Congeneric reliability estimates were in the acceptable to high ranges. Implications for future research on the "SCS" and use of the tool in practice are discussed. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]