“…These researchers have consistently found significant increases in mathematics and reading scores on standardized achievement tests (Brigman & Campbell, ; Brigman, Webb, & Campbell, ; Campbell & Brigman, ; León, Villares, Brigman, Webb, & Peluso, ; Webb et al, ). Across these studies, Villares, Frain, Brigman, Webb, and Peluso () calculated an overall effect size to demonstrate the practical value of SSS that resulted in .41 for math and .17 for reading, which are generally considered large effects in the context of K–12 academic achievement (Hill, Bloom, Black, & Lipsey, ).…”