Nowadays, children are more open-minded, which may be caused by some bad culture outside. High school students, in particular, are usually under great pressure in their study and life, and will find something to vent or indulge themselves. As parents, they should educate their children positively in this respect. Children in this period are rebellious and can consider problems from her perspective. Don't criticize severely. Adolescent children are rebellious and even against you. Moreover, the situation may not be as adults think. Condoms may just mean "setting money" and are a kind of "cool" popular among some middle school students. Putting condoms in the bag means that you will "set money" in the future. Of course, it is undeniable that this popularity also reflects students' curiosity about sex. Even if she does have sex, she knows to use condoms, which is also a good thing.

So I suggest you find a suitable opportunity to talk to your daughter about sex naturally, understand her attitude and behavior, and express your worries and hopes. If the daughter can listen and is willing to do what the mother expects, such a dialogue is enough; If she doesn't listen and doesn't want to do what her mother expects, it's useless for you to restrain and prohibit it with a tough attitude. On the contrary, it will stimulate rebellious psychology and even make more irresponsible things.

I hope the above answers are helpful to you.