Michigan ASCD is a great organization with a vision for bringing quality support to the region, matching the quality level of the national organization. ASCD national brings in the big names in just about every educational area there is to explore. That kind of expertise is difficult to match. What MI ASCD does, and I'm sure other states do but I only know the work of the MI chapter, is bring philosophical pedagogy into practice.
Differentiated Instruction is a great example. On February 1 and 2, some of the top educators in Michigan who do DI are coming together to show, model, and facilitate the work of teachers and administrators to improve practice for the support of student learning. A similar conference was done in August of 2009. Many of the resources are posted, for a limited time, on the MI ASCD website. Well worth exploring.
Also, check MI ASCD on Facebook.