Guided by the social cognitive theory, this randomized controlled trial tested the "Make a Move," a provider-led intervention for Head Start parents aimed to produce changes in the outcomes of knowledge, attitude, and behavior of physical activity and healthy eating. Participants were parents of children ages 3–5 years enrolled in a Head Start program. Participants completed a 57-item questionnaire at baseline and postintervention. The Wilcoxon rank-sum test revealed a statistically significant difference between the intervention and control groups in scores on knowledge of healthy eating (z = 1.99, p = .05), attitude of physical activity (z = 2.71, p < .01), and behavior of physical activity (z = 2.03, p = .04). Ten participants (77%) completed all four intervention sessions. This study provided new insights into the relationship of a provider-led intervention with respect to knowledge, attitude, and behaviors in healthy eating and physical activity.