The majority of children aged three to five in the U.S. attend childcare or preschool, where they may consume up to two-thirds of their daily calories and nutrition. Teachers at preschools serving low-income families are responsible for guiding children in their food choices. Feeding style, or caregivers’ overall emotional tone and approach at mealtimes, is believed to influence children’s food choices and acceptance. While there is some research on parent feeding styles, there is little on preschool teachers’ feeding styles. This causal-comparative study, using the Caregiver Feeding Style Questionnaire, examined the feeding styles of 660 teachers at New York City preschools serving low-income families, comparing feeding styles of teachers at preschools who received Eat Well Play Hard in Child Care Settings (EWPH) professional development (school response rate 90.4%) and those at preschools that did not (57.1%). (author abstract)