Wesleyan doesn’t have a jazz program per se, that I can find anyway. It is best known for its focus on world music http://www.wesleyan.edu/music/aboutmajor.html
There are a couple of jazz courses listed and 4 jazz ensembles/orchestras. It is a great school for music if you are interested in diverse musical genres, from many different cultures.
The faculty member cited, Tyshawn Sorey, like George Lewis at Columbia, Vijay Iyer at Harvard, and others who are listed as colleagues, are hard to pigeon hole as strictly jazz since they are also involved in experimental and “new” (contemporary classical ) music areas as well. Sorey would be a wonderful professor to study with.