This document provides information about Chester County High School's block schedule format and strategies for teaching effectively within a block schedule. The block schedule divides the school day into longer class periods of about 90 minutes, with classes meeting fewer times per week than a traditional schedule. The document discusses the pros and cons of block scheduling and provides guidelines for lesson planning within a 90-minute block, including allocating time for different activities like direct instruction, guided practice, and independent work. Suggestions are also given for varying teaching strategies to engage different learning styles and incorporating formative assessments.