I followed the link on this Pearson blog post to "the recent research from John Hattie" that "has been out for a few days" and while I thought it was interesting I also thought that I had seen it before. Indeed I had - in 2011. And 2013. And last January. So what's new here? I'm not sure - it's essentially the same thesis (maybe the data have been updated? It's hard to say). There is a new blog post, and Pearson is trying to drum up conversation. The current presentation has Hattie focusing on what he calls "distractions" - things that sort of work, but have tiny effect sizes (as determined by various meta-analyses and, it appears, PISA results). These distractions include such things as school choice, infrastructure and buildings, early childhood education, holding students back, and learning styles, and the like. So what does work? According to Hattie (at least as of 2009) things like self-assessment, Piagetian programs, formative evaluation, micro-teaching and acceleration. Though the current article points to something very different. In this Pearson-sponsored paper the focus is on assessment - "resources that assist feedback to teachers and school leaders about their impact on all students and to reward robust discussion about that impact." (p.25) There's also an infographic.