Public The Demise of the Common Core featuring Jim Callahan Video March 11, 2016 mctvblog Leave a comment Jim Callahan, former principal of the Mary Hogan School, writer and consultant, talks about problems with the application of the Common Core math standards. Recorded 3/11/16. Producer: Jim Callahan & Micah Bove Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related