What sort of UAI do u need? What are future career(s) are u interested in? maybe you should think about a few of these things before you decide. Im only going to a selective school because i need a high uai and my schools pretty crap the highest UAI at my school is like 93.7 its ranked 200+. Maybe just try out the new school for a little while and then go back, get your friends to get msn or something like that then you can always stay in contact, see them after school etc. I spent a month weighing up the pro's and con's before accepting to go to penrith selective, it was a pretty hard choice for me. But it all comes down to you everyone will give their own opinion and their set of pro's and con's but it will just make your decision harder. Talk to your parents, maybe even your teachers or careers advisor. Some of the teachers at my school *off the record* told me to go to a better school.