What's the best kind of program to curb harmful bullying in schools? A new study says some commonly used methods, including classroom discussions, role playing and detentions, are not effective. But "whole school'' programs that involve teachers, administrators and social workers do work, especially in junior and senior high school, according to Dr. Rachel Vreeman, of the Indiana University School of Medicine. Vreeman led a group that reviewed nearly 2,000 studies of anti-bullying programs conducted in recent years. Their conclusions appear in this month's Archives of Pediatrics and Adolescent Medicine. "As a pediatrician, I see a growing number of children with physical, social and emotional problems, including lower self esteem, that are the result of bullying," Vreeman said.