“…A third category that was coded, group-based PD, conveyed approximately half of the cases in both in-service (48%) and pre-service (54%) literature. Group-based was coded if the PD was organized for a group of teachers but had a focus on individual learning rather than collective learning (e.g., Brown et al, 2016;Haddix, 2008;Kidd, Sánchez, & Thorp, 2008;Lazar & Offenberg, 2016). Finally, the duration and intensity of the interventions varied greatly, ranging from two 1.5-hour sessions (i.e., Moore, 2016) to multiple years training programs (i.e., Kidd et al, 2008).…”