Domain 1: Data-Based Decision Making

School psychologists understand and utilize assessment methods for identifying strengths and needs; developing effective interventions, services, and programs; and measuring progress and outcomes within a multitiered system of supports. School psychologists use a problem-solving framework as the basis for all professional activities. School psychologists systematically collect data from multiple sources as a foundation for decision-making at the individual, group, and systems levels, and they consider ecological factors (e.g., classroom, family, and community characteristics) as a context for assessment and intervention.