"This is an important book for educators who seek to use scientific means for solving all kinds of problems--particularly problems of educational equity. It addresses problems of practice, from instructional problems to organizational problems, and the nature of problems in general. As described by Hinnant-Crawford, improvement science will serve as a useful framework to undergird our continuous improvement efforts to alleviate inequities in education." Gloria Ladson-Billings, PhD, President, National Academy of Education Fellow, American Academy of Arts & Sciences; Professor Emerita, University of Wisconsin, Madison