The purpose of this project—Training and Technical Assistance to Support Implementation of the Dating Matters: Strategies to Promote Healthy Teen Relationships Initiative (Dating Matters Initiative)—was to provide training and technical assistance (T/TA) to support Dating Matters grantees in their efforts during the implementation of the Dating Matters Initiative. The Centers for Disease Control and Prevention (CDC) developed the Dating Matters Initiative, a highly innovative, comprehensive community approach to prevent teen dating violence (TDV). The Dating Matters Initiative includes preventive strategies for male and female peers, families, schools, and neighborhoods and includes local public health capacity building to implement prevention strategies and identification and validation of community-level indicators of TDV. To meet the T/TA goals, RTI created a team with experience in T/TA models, strong knowledge of and experience with Dating Matters, and diverse areas of expertise related to T/TA implementation.