Now in a revised and expanded fifth edition that reflects current research and best practices in direct assessment and intervention, this text addresses a perennial need for school practitioners and practitioners in training. Presented is a comprehensive, problem-solving-based approach for working with K–12 students who are struggling with reading, writing, or mathematics. The book provides a framework for evaluating the instructional environment as well as each students context and unique learning needs; planning instructional modifications; and monitoring progress. The companion workbook, available separately, contains practice exercises and reproducible forms.