My ds (almost 8) just went up to Juniors and has gone from being a confident, popular boy to being much less confident and seemingly struggling with friendships. They mixed up his classes and he's no longer with his main friends, although they still mix in the playground - but he's had classes mixed before and it's never been a problem.
He says no-one will pass to him now when they are playing football at playtime. Might sound trivial but it's really upsetting him. He used to love school and now says he doesn't want to go.
The teacher says he is fine and settling in fine to Juniors.
Anyone else had a problem with this transition??