Wesleyan has a good music department, and has always favored diversity, “world music” long before other schools did.
For a multi-faceted kid who is just beginning to change interests, a BA program might be best. Ideally one with a larger percentage of music classes in the major and fewer or on gen eds (Brown, Amherst, Hamilton). He could look at Bennington, where work is self-driven (and also there is a winter field work term).
He could do a BM in composition with his portfolio and try to focus on more progressive schools. Again, Boston Conservatory gives access to Berklee. Oberlin, Bard, Lawrence, Hartt, U of Denver, MSM, Mannes at the New School (which also has jazz) come to mind. Northwestern grad program is progressive.
If he wants grad school and money is an issue, he can apply in Canada, UK/Europe or apply to PhD programs that are funded with a master’s along the way. So there are ways around that financial concern.
I just saw that you got my PM so I will switch to that!