 At this point, key leaders in CTC communities also reported significantly stronger community norms against adolescent drug use.The CTC Milestones and Benchmarks Survey was used to track progress in the implementation of core components of the CTC prevention system.In each year of the intervention, CTC communities enacted an average of 90% of the key features of the CTC prevention system, including developing a community board, prioritizing risk and protective factors, selecting tested and effective preventive interventions from the Communities That Care Prevention Strategies Guide, implementing selected implementation programs with fidelity, and periodically assessing risk and protective factors and child and adolescent well-being through surveys of students.