#camp

How do I help my little one transition to a new school and manage his modesty?

I have two questions regarding my little guy:
When should we start to prep him for a new school knowing he leans on anxious?
Also, regarding summer camp, I took him out of the second camp today. He really didn't want to go back after I picked him up yesterday. We found out it is for ages 7-15! No one told us before.
Yesterday he was just sitting around, not wanting to go into the water (and it was a water sports camp!). Later he told me it was because he didn't want to get wet and then change clothes in front of everybody as he didn't feel safe. How do I help him with that?