Harley as open said, this is what ds' school do and have always done.
He spends a lot of time outside. Which to be honest at first I thought was a good idea but I didn't realise just how much he would he out of the classroom, but he's in yr1 now and the more he spends outside the further behind he's getting. (Just my view, although ds has made progress I always feel like how much more progress could he of made? He only did 2 hours at school per day for the first 6 months which is a lot of lost hours) I don't see how it's helpful when all the other children are sat learning inside but ds is often outside at the water table with his 1-1.
It's not just behind in a educational sense but socially too, he doesn't have any friends at school, very rarely does he get a party invite , no one speaks to him other than a hello xxxx they seem to actively avoid him from what I've witnessed myself from previous said rare party invite. He doesn't mention any children's names at all I'm not even all that sure if he really knows any 🤷🏻♀️
I said to him one day who is your friend at school, who do you play with? and he said miss xxxxx ! His 1-1. Bless him.
I do realise he's going to behind socially with autism and sadly NT kids think he's weird so avoid him which doesn't help, but he needs peer interaction much more than he's getting to learn how it all works. I can do educational stuff at home to help with that side of things but since he's an only child unless I go out kidnapping I can't help with the social aspect unfortunately 
I've spoken to the school today again regarding lunches. Yes I'm still banging on about that all this time later she thinks he will stay from next week, she wanted to make him a social story take a pic of his pack lunch bag and the dinner hall etc and read it to him and send it home to be read which she's done now and they wanted him to settle into his new classroom and meet his lunch time 1-1's (he's got 2 lunch 1-1's alternating days, it's confusing me! all his support staff he has 4 in total, so god knows how confusing it is to him! But he's supported full time that's the main thing and tbh he doesn't seem to care or understand) so now all that's been done she said at pick up time I don't see the point pro longing it I'll chat with Mrs xxxxx and speak to you tomorrow and hopefully all is good to go for next week.
She mentioned something about getting him sitting on the carpet more as he's refusing at the moment so she's bought him some squeeze toys and fiddle things but he's not interested for the minute, so she's keeping on trying with those. Not really a lot you can do, he's so headstrong, if he doesn't want to sit, he won't but all we can do is keep trying different things.
Hope everyone is ok! X