Wash yoir face often and put on medicine befire school when you get home and before bed I would recommend proactive if he can afford it but if he can't get nitrogena
It's a prick of a thing. Just got to do little things like clean face morning and night, change pillow cases. Even try putting Manuka honey on the skin.
Wash face and use teatree oil just put a couple drops into a liquid face wash like neutrogena. Or try apple cider vinagar one part water one part water just keep it in a bottle and use a cotton pad to rub it on after washing face don't rinse off (yes you will now smell like a salad) teatree oil I think works sooo well I used to do that and it really worked for me