The Individuals with Disabilities Education Act (IDEA) provides the guidelines for what school personnel must do, and are held accountable for, in their educational assessments and evaluations of children with disabilities. However, there is a great deal of confusion and misperception about what the Act and Regulations mean and how they should be interpreted and applied. Written in the user-friendly and well-known Essentials format, this book provides the first concise, authoritative guide of its kind for school psychologists, administrators, teachers, and other school service providers who must be knowledgeable regarding these laws and regulations.