All too often, literacy assessments are given only for accountability purposes and fail to be seen as valuable resources for planning and differentiating instruction. This clear, concise book shows K-5 educators how to implement a comprehensive, balanced assessment battery that integrates accountability concerns with data-driven instruction. Teachers learn to use different types of test scores to understand and address students' specific learning needs. The book features an in-depth case example of a diverse elementary school that serves many struggling readers and English language learners.