if you dont smoke at all i heard it could be a week to 13 days and if you are a daily user it could be a month to 3 months depending on if you're fat or skinny. you can drink tons of water and exercise and sweat to quicken the process of detoxifying your body, maybe get a gym membership and sit in a sauna for a few hours. any way you want to sweat quickens the process of detoxing your body of all the toxins.
1) stop the bullying, just everyone be nice to each other and keep to themselves 2) grades. grades shouldn’t be as important as they are 3) mental health needs to be focused on