The proposed study will examine associations between CRP implemented in classrooms, family engagement, and children’s social and emotional development within a large Head Start agency. This mixed methods study will examine data from EHS classrooms including 60 lead or assistant teachers and 160 parents or guardians and their children. The research questions for this study are: (1) Are high levels of teachers’ culturally responsive beliefs and practices associated with higher levels of family engagement for EHS infants and toddlers? (2) Are high levels of teachers’ culturally responsive beliefs and practices associated with higher levels of social and emotional outcomes of EHS infants and toddlers? (3) Does family engagement mediate the association between CRP and social and emotional development of EHS infants and toddlers? (4) What CRP beliefs and implementation do EHS infant and toddler teachers demonstrate in the classroom setting? (5) How do EHS families of infants and toddlers perceive and experiences CRP implementation in classroom settings? This mixed methods study will examine data from EHS classrooms including 60 lead or assistant teachers and 160 parents or guardians and their children.