I want to call attention to a post there [at the Education Policy Blog] by Philip Kovacs (haven't met him yet -- though I've met a few of the others there).  It's an important reminder about gaps other than the achievement gap.  Kovacs, focusing on the gaps between African Americans and whites, is right to point out that not all of society's problems begin in school and many of them cannot be solved without addressing out-of-school factors.  He includes the  incarceration gap, the homeowner gap, the healthcare gap, the earnings gap, the poverty rate gap, the unemployment gap, the murder gap, and even the happiness gap. 

(And, yes, there's a huge gap between my Photoshop skills and those of the average blogger, but I'm working on it.)  UPDATE:  David Ritchey of the Association of Teacher Educators took pity on me and sent in a better image.