This article describes the development of Virginia Improves Teaching and Learning (VITAL) as a statewide data warehouse focused on teacher education. The VITAL system is a longitudinal data system that tracks individuals from their entry into teacher preparation programs to employment in public schools. The system goes far beyond typical institutional data and includes a survey system to collect data about teacher candidates, working teachers, and preparation programs. VITAL has the potential to be a major vehicle for improving teacher education programs, strengthening accountability and accreditation processes, informing policy and funding decisions, and furthering understanding of teacher development and effectiveness. (Contains 1 figure.)