"This book uses a practical approach to early intervention for struggling learners, while keeping in mind the cultural and linguistic considerations for English language learners. Applying the RTI strategies in this book takes the guesswork out of educating students and reduces referrals to special education due to lack of instruction." —Robert Raymond, Senior School Improvement Instruction Specialist Office of Special Education Initiatives, New York City Department of Education Assess students accurately to make informed instructional and eligibility decisions! Effective and ongoing assessment processes are crucial for making important decisions about the education of at-risk and struggling students. This practical book presents K–12 educators with a comprehensive overview of the three primary types of assessment within multitiered Response to Intervention (RTI) models: universal screening, progress monitoring, and diagnostic assessment for special education. This resource establishes the foundation for assessment in RTI and provides practical suggestions for implementing universal screening and progress monitoring to make informed instructional decisions. The author identifies the role of RTI in determining student eligibility for special education services and discusses effective assessment decision-making processes, including roles and responsibilities of different team members. This book also: Provides detailed coverage of specific assessment methods and practices, including Curriculum-Based Measurement Addresses important topics related to RTI, including fidelity of implementation Presents RTI assessment needs of culturally and linguistically diverse learners Includes tables, figures, and reproducible forms and PowerPoint slides to facilitate training and implementation RTI Assessment Essentials for Struggling Learners is a valuable guide for members of RTI teams looking to expand their expertise in meeting the needs of all students.