How much do you differentiate? I teach mostly whole group and help those who need help as necessary. It seems to me that this is what most teachers do, at least where I've worked. The exception to this in my experience would be primary teachers doing Daily 5 or guided reading groups. There's an article on edweek.org (https://www.edweek.org/ew/articles/2015/01/07/differentiation-doesnt-work.html) that claims differentiation doesn't work. From the article: In a winter 2011 Education Next article, the Thomas B. Fordham Institute's Michael Petrilli wrote about a University of Virginia study of differentiated instruction: "Teachers were provided with extensive professional development and ongoing coaching. Three years later the researchers wanted to know if the program had an impact on student learning. But they were stumped. 'We couldn't answer the question ... because no one was actually differentiating,' " the researcher, Holly Hertberg-Davis, told Petrilli. I'm wondering, what do you all think about this?