In this sequel to the bestselling Pyramid Response to Intervention, the authors advocate that an effective RTI model begins by asking the right questions. RTI is not a series of implementation steps to cross off a list, the authors suggest, but rather a way of thinking about how educators can ensure that each child receives the time and support needed to succeed in school and in life. When educators base their thinking about RTI on four essential guiding principles, they will find the most effective answers to implementation questions.