<p>Something to consider: what is the reason for searching for a dual program? These are generally extremely demanding, usually require 5 years to complete, and are not for the faint-hearted. I think sometimes they may seem like a good option for an “undecided” musician, but I just want to point out that in fact, all of the programs mentioned require a major committment.
As other posters have mentioned, parameters differ at different schools and I might add that there are also differences among studios and teachers, so finding a teacher who is enthusiastic and supportive of a dual degree is also something to consider.
Rice/Shepherd offer dual degrees in theory, but almost never in practice, for example.</p>