This book, like the book on the ELL Critical Data Process, guides educators through a process to collect data, have critical conversations, and document their decisions in a matrix one data point at a time. The result is a pictorial image, the matrix, that represents the discussions of the team. This helps the team to determine whether to implement interventions, add more interventions, or make a special education referral. The discussions and work help the team to know the root cause of the presenting problem. Then the team designs a more targeted intervention or creates the ground work for better analysis of the special education referral. If a special education evaluation is started, this process helps create data that can lead to a more accurate special education evaluation.