astute12, yes Wesleyan has some jazz courses, and ensembles, such as
MUSC455 Jazz Ensemble 1
MUSC456 Jazz Improvisation Performance 1
MUSC457 Jazz Orchestra I 1
MUSC458 Jazz Orchestra II
Sorry to be unclear. What I meant was there is no jazz program per se.
In the sense you mean many many schools “have jazz.” 
It seems students at Wesleyan are allowed to focus in on an area of interest as long as they balance it with work in another field of interest within music, according to the website. It is a BA program so approximately 10 courses in music.
Just want to mention that I know a talented jazz saxophonist who attended Tufts and did gigs and majored in science. Apparently it worked well. He didn’t want to do the double degree with NEC.