“…In the last decade and a half, great strides have been made to generate methodological tools and benchmarks to support the design and planning of RCT evaluations in K-12 education. K-12 researchers now have available estimates of the design parameters necessary for conducting statistical power analyses (e.g., see: Bloom, Zhu et al, 2008 ; Deke et al, 2010 ; Dong et al, 2016 , 2021 ; Hedberg, 2016 ; Hedges & Hedberg, 2007a , 2007b , 2014 ; Jacob et al, 2010 ; Kelcey et al, 2016 ; Jaciw et al, 2016 ; Juras, 2016 ; Schochet, 2008 ; Weiss et al, 2017 ; Westine et al, 2013 ; Xu & Nichols, 2010 ).…”