Research Findings: Challenging the development of high-quality preschool education is the instability of the preschool teacher workforce, blamed in part on workplace conditions including isolationism, perceived lack of career reward, and lack of preparation. Little attention has been given to whether a preschool's organizational climate can mitigate these challenges, despite demonstrated workplace climate effects on teachers' attitudes, commitment, and practices in kindergarten-Grade 12 teachers. This study investigated preschool teachers' perceptions of a positive workplace climate (i.e., sense of school community); predictors of these perceptions (teacher qualifications and organizational features); and relationships among teachers' sense of community, classroom teaching quality, and attitudes toward teaching in a sample of 68 preschool teachers serving at-risk 4-year-olds. Overall, teachers provided high ratings for their sense of school community, although moderate interprogram variability and moderately large to large intraprogram variability existed. Teacher qualifications and preschool affiliation did not predict teachers' sense of community, but preschool size predicted perceptions of collegial support. Perception of collegial support and program influence was significantly related to positive attitudes toward teaching; only perceptions of program influence were related to classroom quality. Practice or Policy: We discuss the potentially important role of work environment in bolstering the quality and stability of the preschool teacher workforce. (Contains 6 tables.)