I spent 3 and a half hours with Zoe's kindergarten class. It was fun, and they were cute, but it was exhausting! I don't know how the teacher does it. Granted, a music teacher & a dance teacher came, so the teacher got to be "off" for 2 hours. But still. My mother in law was a first grade teacher for 5 years before becoming a guidance counselor, and she said it was very tiring.