For classroom teachers, O'Meara, a former teacher and administrator who is now an independent educational consultant and curriculum specialist for students with special needs, offers a guide to using Response to Intervention/Instruction (RTI) and differentiation with all learners in grades K-5, including those in general education, English language learners, and special needs and gifted students. She outlines their principles and implications in the classroom, how to merge them, their similarities and differences, and differentiation strategies in the three tiers of RTI for curriculum and instruction, assessment and problem solving, and the environment. Annotation ©2011 Book News, Inc., Portland, OR (booknews.com)