Classes

Our school like most charter homeschools offer classes every week. This was our schools first week of classes and while my children love the classes I have to admit when we got home I was exhausted! My kids were ready to do a five-mile-marathon. I on the other hand was ready to sleep for a week. Jeremiah attended 3 classes (Math, English & Spanish) while Erik went to 2 (Math & Spanish). My big question is someone able to explain why today was more tiring then when I am the primary teacher?