The high alanine aminotransferase (ALT) indicates that the liver may have inflammatory reaction and may have hepatitis. However, a few days before the physical examination, if you drink a lot, lead an irregular life, eat irregularly, and take certain drugs, you will also have a high level. It is estimated that further observation is needed to confirm that if it is hepatitis, you can't enter school. If you are only a hepatitis B virus carrier, you can enter school.