areas typically around the eyes, ears, and cheeks. It is a highly contagious disease. You can wait for a few days more till the crusting and oozing of the ears stops and then you can send him to school.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your dermatologist. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.