Clearly things have moved on - well, up to a point. 
I'd be the last to deny that I should have spotted the problems earlier in DS's case. A warning, though - because he knew the fees were a struggle for us, he was MORE tongue-tied about the problems he saw. In DD's case, we did spot them early, primed by DS. Bullied kids are often ashamed of it and imagine the parents will side with the bullies. As for the disorder, unfortunately most kids think of whatever they are used to as 'normal', so DS only once said, mummy, the computers have all been broken again so I couldn't email you or do my prep. :(
FWIW, we went to visit Winchester with DS, who quite liked it, but really didn't want to board. Even if he'd got a bursary it would have been a giant mistake for DS - he's dyspraxic, borderline Aspergers, and subject to panic attacks, which I'm afraid I think are the result of some of his prep school experiences. However, I liked the master of School House and I think more confident boys could easily flourish there.
Not Eton, though. DS went there for music lessons for four years, so I spent an hour a week watching the boys interact. A privilege offered to few. Ack. :(
Happy, if you message me I will disclose where DS did go, provided you promise not to share the message...