Bill Ferriter has very good things to say about Raising the Bar and Closing the Gap, a new book co-authored by professional learning team experts Rick and Becky DuFour:
I've ALREADY photocopied several sections and slipped them under the doors of the principals and teacher leaders in my building...an easy thing to do when intervention strategies are carefully described, implementation plans are outlined, and evidence of impact is included for schools that look a lot like ours!