A study of the Linking the Interests of Parent and Teachers (LIFT) program evaluated the program's influence on the delinquent behaviors of 600 first- and fifth-graders from high juvenile crime neighborhoods (Eddy, Reid, & Fetrow, 2000). The three major components of LIFT were 1) classroom-based problem-solving and social skills training, 2) playground-based behavior modification, and 3) group-delivered parent training. LIFT classroom instructors met with all the students in a classroom for one hour twice a week for 10 weeks. The program targeted specific youth social skills, such as opposition, deviance, and social ineptitude, and parenting practices, such as disciplining and monitoring. Results of the experimental evaluation showed that families in the randomly-assigned treatment group demonstrated greater improvements in problem-solving and conflict resolution skills than the randomly-assigned control group families. The study also found that, over the three years following the program, LIFT children were less likely than control group children to show an increase in severity in teacher-reported problem behaviors.