I would say that they should just shower nude with the rest.
Everybodys the same.
What they need to do, is supervise more what goes on.
If teasing takes place...then they need to intervene, and stop it on the spot.
Otherwise, the child might become timid, and not really bond with the rest of the boys.
In my opinion, being shy is a problem. IF its not treated early...it will become a much larger problem later in life.
I was one of those "Shy Boys", mainly because I was picked on.
Nobody did anything about it, but I had to go on.
I dropped my drawers, and hoped for the best.
I had to accept the situation, and wash up.
The other reason why they want people showering nude is because some guys DONT SHOWER, and they STINK.
We had one kid in our Gym class that stunk like hell, never showered at home, and we took care of that.
We bombarded him, stripped him totally Nude, and all squirted shampoo all over him, then gave him the rub down.
After that...He showered with the rest of us, Daily.
So, no matter what religion, what race, what color, People have to clean up.
The only way you can clean up is being NUDE.