This annotated bibliography presents citations and summaries of select reports on state quality improvement processes for preschool programs. Reports are selected to be of interested to states assessing and expanding their services and providing greater access to high quality programs. Categories of the selected reports are: State Data on Preschool Quality Improvement Systems (one study); Observational Measures of Instructional Practice (one study); Monitoring Procedures (one study); Data Driven Quality Improvement (three studies); Governance of Preschool Program Quality Assurance System (two studies)