How effective are Tier 1 Multi-tiered System of Support (MTSS) reading instruction interventions?

The impact of tier 1 reading instruction on reading outcomes for students in Grades 4–12: A meta-analysis

This meta-analysis examines the impact of 1^st tier reading instruction on reading outcomes for students in grades 4-12 in an Multi-tiered System of Support (MTSS) service delivery model. 37 studies met criteria for inclusion in the meta-analysis. The study finds small, but positive effects for 1^st tier reading instruction on comprehension, vocabulary, and indicates minimum evidence for struggling readers maintaining or improving reading comprehension over struggling students receiving typical instruction. Hedges’s g was used calculating effect sizes. Because of the limited number of studies examining phonics/word recognition and fluency instruction, it was not possible these critical instruction areas in this meta-analysis.

Citation: Swanson, E., Stevens, E. A., Scammacca, N. K., Capin, P., Stewart, A. A., & Austin, C. R. (2017). The impact of tier 1 reading instruction on reading outcomes for students in Grades 4–12: A meta-analysis. Reading and Writing, 30(8), 1639-1665.

Link: https://link.springer.com/article/10.1007/s11145-017-9743-3