What topic is more suitable for mental health class in senior two?

Now the second-grade children know as much as we do. Hehe, if you are more open-minded, you can choose some topics that everyone is interested in, so you don't have to avoid talking about sex, such as "sexual hygiene", "the relationship between love and sex", "sexual psychoanalysis" and "sex and morality". You can control your own scale and give your children more opportunities to ask questions, which will help you build a better relationship with your children. They can understand everything you say and don't have to show shame in front of the children. This will only make children feel angry, embarrassed and funny. When some children have strange ideas, congratulations, you have begun to gain their trust. Try to solve it with wisdom. I wish you success in teaching!