*The most accessible single-case design resource, thoroughly revised; 30% new material includes a new chapter and an even greater emphasis on practical applications. *Critical need--gives practitioners skills to document the effects of an intervention and create a data-based educational plan, crucial for accountability. *With clear, practical examples, distills for educators how to collect and analyze data to evaluate an intervention's efficacy. *Reoriented to align perfectly with multi-tiered systems of support and current evidence-based practices. *Includes reproducible graphs and other tools; appendices provide guides to analyzing and presenting data in Excel.