The purpose of this book is to communicate findings of a research synthesis investigating the bases of reading failure and the curricular and instructional basics to help guide the design and advancement of children's reading performance. The synthesis--completed by the National Center to Improve the Tools of Educators (NCITE) and sponsored by the U.S. Department of Education's Office of Special Education Programs--was conducted as part of NCITE's mission to improve the quality of educational tools that largely shape practice in American schools.