My eldest two are both summer born and we're not ready for school the sept after their 4th bday. Our local school at the time, though ofsted outstanding and sought after just didn't feel right. It was very much geared to getting results and lacked the personal touch/friendliness)warmth that I think a primary school needs.
We had friend who were home educated and knew people in the home ed community. The county we live in has a big, busy home ed community. So we went with our instinct and kept them out of school. We still did lots, met lots of people and attended some taught workshops.
Both ds1 and ds2 thrived at home ed and we would have ccontinued longer but our hand was forced when I got post natal psychosis after ds4 was born. So they briefly attended school on a flexible school basis, but then the head teacher changed and the New one was not amenable to this.
We then looked at local schools and found one we liked and it had spaces, they visited before the summer and we're allowed to do a few taster days before starting in the Sept. They both fitted in well, no issues making friends or academically.
We followed autonomous learning when we home educated, following their lead, but they had no problems once they started in school. They are bow in yr11 and yr8 at high school and doing brilliantly :)
Ds3 started the following year and though Dec born he wasn't ready for full time school and the School were happy for him to go part time. I think he partly needed it as it had been a difficult year after ds4 was born with my illness.
So he did half days then some full days but he would have Wednesday's off. This worked well.
He was going to go full time in yr one but then got ill with Kawasaki disease, very unusual and it left him easily tired and he had to be careful not to exert himself. The school supported him doing part time. We did some work at home when he wasn't too tired. Towards the end of yr one and in yr two they did some extra work to help him catch up, they had a nurture ggroup for children needing a bit of extra support and they would do work together etc. He is now yr5 and doing fine.
I think the elder two thrived with home ed and our plan was to do it till high school age, as it was our circumstances changed. We were lucky to find a lovely school and the boys have thrived. Going part time was the right thing for ds3 and though he struggled aacademically for a while he had no issues socially etc and part time was def right for him.
Interestingly ds4 when he started reception went full time straight away, he us now yr 2. He was totally ready for school, a different character to the elder three madthings. So we did what was right for him.
Madthing5 is 3 and will start school next Sept, I will see how she is and make a judgement nearer the time and in conjunction with the school.
I think only you know your child and it sounds like you have very real concerns, moving to a new family is a huge thing for your little one and attachment issues are very important so if you think he would benefit from part time schooling then speak to the school. It would be good to have them on board.
Do you have support/advice from other adoptive parents who have faced this dilemma?
're academic stuff, you can do that at home if he is ready. The key bits of reception are the socialization and learning school routines and rules etc as teen says.