After we dropped off Cade at the gym , we found her new room and then her chair ( they sit at big round tables ) . We watched as all the other kids came in and found their seats . I saw lots of them getting their pictures taken ( we took ours at home ) , and a few mom 's with tears .
Question: What may be the reason for the event described ?
The answer to the above question:


It was their first day of school .