Can you tell me how to cure asthma without my inhaler at school?

No cure: Unfortunately, there is no "cure" for asthma. Some people grow out of it or get better as they grow up, but not necessarily. As a pharmacist, i always recommend you carry your inhaler regardless how you feel. Steroids and long-acting inhalers can help reduce symptoms if you're having them often. Talk with your doctor or pulmonologist about this if you're looking to cut down/having a lot of symptom.

No cure only control: When you have true asthma it is always with you.You avoid your triggers & treat with meds and you "manage" to stay relatively healthy.Four decades ago they managed asthma with pills & adrenalin shots. The pills were a cousin of caffeine that had significant side effects (including seizures )but worked. You are lucky to live at a time when inhalers can treat the problem at the site, in the lungs.