Parental responsibility
Parents should do a good job in safety education. The father should remind the boy (the mother reminds the girl) to protect the place covered by the clothes, not to show it to others, and not to agree if someone forces it, and notify the parents and teachers in time.
The role of schools
Schools should not be too shy to talk about sex topics, but let students know which parts of the body are invisible through body structure maps and how to protect privacy.