Behavioral, Emotional, and Social Training: Competent Learners Achieving School Success (BEST in CLASS) – A classroom-based intervention delivered by teachers, designed to prevent emotional and behavioral disorders in high-risk children. The program is rated Effective. Intervention group children showed statistically significant improvement in behaviors, social and behavioral competence, and student-teacher relationships, compared with control group children. Intervention group teachers showed statistically significant improvements in instructional practices compared with control group teachers.