Get this from a library! Formative classroom walkthroughs : how principals and teachers collaborate to raise student achievement. [Connie M Moss] -- "[Authors provide teachers with numerous examples and guides to improve teaching and student learning.
When it comes to differentiation, how are you teaching up? Take a look at Carol Ann Tomlinson's book "The Differentiated Classroom: Responding to the Needs of All Learners," where she explores strategies for creating an effective differentiated classroom!
The Differentiation Destination: Pre-Assessing What You Know About Differentiated Instruction Great references to what differentiated classrooms are in chapter 1 of 'Fulfilling the Promise of the Differentiated Classroom'