Development of a Brief Measure for Multi-Tiered Systems of Support Sustainability

Abstract

This study focused on the development of the Multi-Tiered Systems of Support–Sustainability Scale (MTSS-SS). Review of the literature identified factors associated with sustainability for multi-tiered systems of support (MTSS), and it indicated few sustainability measures currently exist for practitioners and researchers to incorporate into MTSS program evaluation. This study endeavored to create a brief measure of MTSS sustainability that could be used for evaluation in research and practice by school interventionists. Study participants included a national sample of 598 school counselors and school psychologists who worked as interventionists in schools using MTSS. This group completed the 10-item MTSS-SS. Outcomes from content validity ratings, principal axis factoring, internal consistency reliability analyses, and construct validity with known groups indicated the MTSS-SS possessed initial evidence of psychometric adequacy when used by interventionists from the disciplines of school counseling or school psychology. Discussion focuses on the use of the MTSS-SS, need for further development, and study limitations.

Multi-Tiered System of Supports—Interventionist Beliefs Scale: Development and Initial Validation With School Counselors

“…Like the AARP, we used the MTSS-SS (Bahr et al, 2022) for a concurrent validity assessment. The MTSS-SS is a 10-item, Likert-type scale (1 = Strongly Disagree, 5 = Strongly Agree) assessing MTSS sustainability, defined as ongoing implementation with attention to core program principles and implementation fidelity (Han & Weiss, 2005).…”