The purpose of this package of collected papers is to present selected aspects of preventive guidance and counseling programs in grades K-12. These are cohesive, developmental programs designed to provide an organized and systematic approach to the preventive mental health of students. The focus of this material is on programs of psychological education led or co-led by school counselors and classroom teachers. The emphasis is on group programs concentrating on developing skills, concepts and understandings essential to the health and growth of children and adolescents. The psychological education programs are inclusive in discussing curricula, techniques, and assessment measures utilized with students at various grade levels from elementary through senior high school. The presentation attempts to give to the readers sufficient information to allow them to implement such programs in their own settings. (Author/BW)