No but we recommend it as you will learn a lot. Some people think it will be too upsetting to talk about these issues so if you think it may upset you, discuss it with a parent or other trusted adult. If you decide to attend but begin to feel upset during the course, you are able to leave to speak with the school counsellor or student welfare coordinator.
If you choose not to attend, you need to talk to your classroom teacher about what arrangements will be made – often this will be a study period in the library or similar.
If you are being offered the course outside of school, you'll need to talk to the organiser about what you'll be doing if you don't attend the course.