Since he finally got potty trained and a bunch of five years olds left for kindergarten, Simon has moved up to the big class. This is the class for 3-5 year olds, the one Alice just graduated from. He had a few partial days there in advance of his first full day today. The teachers report the transition went very smoothly. It probably helped that he was used to going in there to pick up Alice in the afternoons all the time.