英oral 討論中學校園欺凌...

you may start with: Recently, there are many cases of bullying at secondary schools. Today, we're going to discuss about this issue.

ERR. You may talk about WHY students bully one another
Reasons:
1. They don't know the proper way of managing their feelings.
2. There is no harmonious environment in school.
3. want excitement, get feeling of successful

You may also talk about WAYS TO PREVENT (as you've mentioned)
1. What can teachers do?
e.g. help to create a harmonious environment in school, stop them immediately and guide them with proper ways to treat with these issues.
2. What can STUDENTS do?
e.g. self-reflecting on themselves, whether they should bully others or not.
3. What can parents do?
e.g. teach them proper ways to manage their feelings, create a better family so that the children feel that someone supports them in hard times and they are more willing to talk about difficulties that they face in school, which can eventually aims to stop bullying.

End with: We all agree on (certain points that everyone agrees). Let's create a better school environment so that the number of bullying can be decreased.