look at the teachers for your instrument, maybe see if you can find out some info about them and see if you prefer any. that would be my main bit of advice. however, i imagine you could also look into exactly what the two courses entail in terms of examinations, performance, any academic work etc etc.
i'm sure if you look on the website, you'll find all this info.
how about asking your current teacher? and maybe going to an open day at both.