I think for some children Home education is far more beneficial than being in school.
My eldest daughter (15 in April) was diagnosed with Aspergers, ADHD and PDA when she was 9 or 10. She actually enjoyed school until yr 5 where she was bullied really badly. We looked into Home Ed as she was terrified of Secondary, and I had my concerns too with how cruel some kids can be. She was still soiling and wetting the bed at that stage and that sort of thing doesn't go unnoticed. Also her sleep pattern was awful. Awake all night and a nightmare in the mornings. If I managed to get her up on time it was screaming, shouting, throwing her things at the door, slamming doors etc. Nearly every morning I had to ring school and say that she was on her way but that it had been a stressful one.so they knew what to expect. She was undiagnosed at that point, we didn't know what the issue was (PDA).
After diagnosis, we realised that some of these things were just not going to change. We discussed home ed with her and she lit up. She absolutely wanted to go for it.
We let her finish primary school as she was still relatively happy there, had a couple of friends, but didn't apply for secondary. We schooled for a while, let her figure out her sleep/awake routine and tried to work around it. It still wasn't easy going, we tried working from books, online resources etc. My mum is/was a teacher so she would help out with the maths & English while we focused on more topical stuff and her theatre school.
When she was yr 9 equivalent age, she was able to apply to the local college that do a pre GCSE and GCSE course pre -16 and Home Educated students. She was accepted there and is now about to do her english and biology gcses in May (I think). She'll do her maths and a performing arts course next year. Her anxiety and the pda are still big issues that sometimes get the better of her/us but college are understanding and she has their Autism team for support.
TLDR;
Home educated my (almost) 15 yr old autistic DD for 3 years and she's now doing a couple of GCSES at college.
Also have a 5 yr old who we are doing the same with, with an unschooling approach. Lots of time outdoors, with some books to work from. And stickers. So many stickers.