Wow I've had a completely different experience to most on this thread. I stayed at my schools sixth form and genuinely believe it was the best thing for me to do. First of all, I went to an all girks school but the sixth form merges with a local all boys school so its about 50/50 so there was loads of new friends to make. Also, my closet friends moved on so you kind of make friends with people you'd least except which is great like people you never used to talk to. Its just easier when it comes to settling down you know the teachers so you can just crack on rrather having to spend time getting to know everyone. A lot people I know that went to very, big "social" colleges or sixth forms had to retake yr 12 as they got too distracted. Me on the other hand, I've just send off my UCAS and am awaiting my references, I've gotten so much support and I feel comfortable and safe, that's what's most important. Sorry for the essay lol.