Everyone needs to work together on solving these problems. There should be town meetings involving the parents, students, and entire school faculty to discuss Conflict Resolution. Another idea for younger kids getting picked on could be to have an older student assigned as a type of mentor that he could talk to, and who would step in to settle a conflict or dispute. Groups have also been created where victims and their parents can meet with other victims and discuss solutions. It's comforting to know you're not alone, and friendships can be made there.
Many schools admit that the lockers are the most common place that bullying takes place.
Teachers could take turns standing by these lockers during class changes. The schools can also pass out questionnaires, and do surveys or polls to find out what students and parents think about what is happening and what they would like to see done. Some teachers have told me that their schools put up a peace flag outside on days when there is no conflict in the school. This promotes a pride in the school, and teaches them that even one person's actions can have consequences that affect everyone. Other schools are using posters, and having the students wear certain colors on certain days.