"Four Things Every Principal Should Know about English language Learners by Pérsida and William Himmele is an important and timely book. By targeting school administrators, the authors recognize the critical role that principals and other school leaders play in setting up and maintaining successful school programs for ELLs. Throughout the book principals will find helpful charts and surveys that can be used by teachers to assess or revise the current program, or to provide help in grouping for instruction. This book is manageable for busy principals, highlighting just four important points to consider regarding instruction for ELLs. Each chapter concludes with a concise summary ("In a Nutshell") that readers can use to help them reflect on what was covered in the text. The authors also offer excellent suggestions for further reading to build on the ideas presented.As school classrooms continue to evolve to include a more diverse population, Four Things Every Principal Should Know about English Language Learners will provide an important resource to school leaders as they continue to seek ways to create successful programs to help bridge a persistent achievement gap among ELLs."Rose CappelliPresident- elect, Keystone State Reading AssociationCo-author of Mentor Texts, Nonfiction Mentor Texts, and Poetry Mentor Texts.