UC Riverside

This study evaluated the properties of a 37-item survey designed to measure a school's implementation of a multi-tiered support system (MTSS). Twenty-four elementary schools from one urban school district participated in the study and were grouped based on assigned level of implementation. Survey responses were collected from 148 different staff members. Internal consistency was evaluated using Cronbach's alpha which equaled 0.981, 95% CI [0.975, 0.986]. Interrater agreement, as measured by average measure intraclass correlation (ICC), was 0.979, 95% CI [0.973, 0.985] across all schools and raters. An ANOVA comparing the mean survey score total across groups did not reveal any significant differences [F (2, 96) = 0.41, p =0 .67], nor were there any significant correlations between survey score totals and student outcomes as measured by AIMSweb. Reliability of the survey was strong, but further refinement is needed to improve the survey's ability to discriminate between implementation levels.