My doctors have told me I have severely low blood sugar. I have episodes at least twice a day and have passed out do to low sugar. I have to test my sugar 3 times a day even though I am not diabetic, and even more if my sugar goes low.
Many times there is just no reason.
Check with your physician and make sure he has performed all tests to rule out other causes. Also ask your physician for more information. This can be a serious condition, but between you, your parents, and physician, it is controllable with an appropriately modified diet and regular meal times. It would be best for you to see a dietitian to help guide you in a meal plan that will help to prevent the lows. Teachers will understand.