Evidence at the Crossroads Pt. 1: What Works, Tiered Evidence, and the Future of Evidence-based Policy

This looks like the start of a nice series of blog posts about research evidence use in schools from the William T. Grant Foundation. I like the setup here: about 10 years ago we made a big push for using "what works" and set high standards for high-quality research, mostly in the form of randomized controlled trials. Now we're seeing that research use in schools is more complex than that, and local school leaders need more information not about the average effects of a treatment, but how that treatment can be expected to work under their local conditions and the resources needed for quality implementation.