I am not an expert, by any means but I would just like to reassure parents who are worried about the process. I am not talking about Cambridge here, just Oxford.,
DS has a confirmed place for 2018 and is having a year off as he was very young when he applied so they asked him to. He has come from the Scottish system so I won't bother with exam results etc as they are so different to the majority.
He is the first one from his school to get in to Oxbridge so didn't really know what to expect.
He wrote his UCAS form and really only wrote about his subject - nothing else. He had 2 sentences on other things (linked / job etc) but it was all about History, even engaging with some arguments and suggesting an opinion. He then sat the HAT Test and sent away an essay done in class.
He was called for interview in early December. We live a very long way away so he was allowed to stay the night before, plus two more nights and was offered a 4th night if travel didn't work out. He got all his meals, bedroom etc. During his time there he had 2 interviews and waited in case there was another but there wasn't. Others had up to 2 further interviews if they got asked to a different college.
He then had to wait until January. He didn't know how they told him and was assuming e-mail. It turned out to be post so he waited an extra 24 hours. His offer was conditional and then he worked hard and got the results.
On getting the results the college e-mailed him and were very friendly and helpful, offering book lists, advice, support etc with his year off.
The whole experience was very supportive, helpful and positive. I accept that might not be the case if someone does not get in but he had an absolute ball at the interview, meeting people he knew from chatting on Facebook and TSR. He has met people and made friends he still sees and who he has been on holiday with, many of whom did not get in.
It confirmed his love of his subject and he thoroughly enjoyed being able to talk to other enthusiasts.
He says he feels that from what he hears Cambridge is much shorter, more intense and feels less supportive. But then he would.....
So, after being very unsure about the whole thing as parents we actually felt that, even if he hadn't got in, the process was a very worthwhile one.