((He's 18 years old))

I'm a new student in French Highschool and the problem is...I don't speak nor understand French. I'm at my seat after the class ends and my new classmates are talking and asking me questions which I don't answer because I don't understand. It's loud...very loud, everyone is around me just...leave me alone. "Оставь меня в покое." (Leave me alone) I say quietly but they don't stop.