Research Findings: The purpose of this study was to examine the relationship between preschool children's social outcomes in the classroom (including hyperactivity, aggression, and social skills) and their media viewing habits (including the amount of television they watch and whether they watch videos/movies that are rated as inappropriate for young children). The participants were 92 low-income pre-kindergarten-age children for whom we obtained parent reports of media viewing habits and teacher reports of classroom behavior. The results suggested that viewing of inappropriate content was associated with higher hyperactivity and aggression scores and a lower social skills rating, whereas the amount of viewing was not related to these classroom outcomes. Policy: There has been a great deal of focus on how both the amount and content of television viewed affects social development in middle and later childhood. These studies have helped influence the development of guidelines for parents of young children to limit media viewing. The findings from the present study suggest that school personnel and others should monitor the content of what preschoolers are watching and should educate parents about the potential impact of media viewing on children's classroom behavior. (Contains 2 tables.)