Worried about 6 year olds development

[strawbbaby]

Hi , I have a 6 year old daughter in year 2 at school, she has allways been really confident and made friends easily and I thought she was quite bright until now.
She was fine in reception seemed to be making friends and good progress at school. In Year 1 she seemed to be over looked a bit I felt, the teacher even said to me at the last parents evening of the year your daughter is brighter than I though she was almost like she had dismissed her before and only just noticed?! She also stopped getting invited to partys and play dates which I thought might be to do with the mums knowing each other better and as I worked full time I didn't get to know them as well, but I'm now on maternity and have got more friendly with the mums and in year 2 lots of partys and play dates but my daughter hasn't been invite to any. She has 1 best friend and lots of friends outside school so I'm not fussed about partys really but I'm just concerned that her peers don't seem to like her at school to invite her.
This year the teacher said she's behind on her reading and very quiet and seems in her own little world. I read every night with her she finds the school books easy she's on quite a low stage for her age and is capable of reading a lot harder books at home so not sure why she's not being moved up a stage.
I feel like she's going backwards a bit and have noticed her concentrations really bad.
Not sure if I'm worrying about nothing or if maybe there is something with her that hasn't come out till now?
I've also noticed in her swimming lessons and gymnastics she doesn't seem to make progress like the other kids and is stuck in the same group for a long time until while the others get moved up a group so I'm concerned she might be a little slow to grasp things.
Just after some advice really on what I can do to help her fit in and catch up

[CocktailQueen]

Ask the teacher!

Ask at swimming and gym too. If you don't ask, you'll never find out.

Ask the teacher who she plays with at school too, or she's had problems settling etc.

[Geraniumred]

Ask. Very quiet children can get overlooked.

[strawbbaby]

I have asked the teacher she seemed think she was playing with everyone, but I'm friends with most of the mums in facebook so I see all the party and play date posts! There was one the other week with pretty much the whole class invited except mine! I'm friendly with the mum so don't think it's that she dislikes us prob the kids saying who they want and don't want there. She seems to be chatting to everyone in swim and gymnastics she just doesn't get any better, messes about a bit also I've noticed and doesn't take it very seriously think it's the concentration but worried there could be more to it !

[CocktailQueen]

What does the teacher think of her concentration?

Why on earth are party and play date posts on FB?! Could you ask the mum if the whole-class-except-dd party why?

Sounds horrible. Good luck.

[strawbbaby]

The mums are quite clicky in our year seems if your not in your child gets left out which is a shame but she has a lode if friends from outside school so it doesn't bother her, it ls strange that she's so outgoing in her out of school clubs and makes friends easily but with school the teacher says she very quiet and the opposite to what she's like elsewhere.