@browniemom - as @ScreenName48105 said above- you have examples of Schools of Music at Universities on your list - such as University of Indiana, Northwestern, USC, Michigan, Rice, Carnegie Mellon. “Stand Alone Conservatories” are not affiliated with any college - such as Juilliard, Curtis, NEC, Manhattan. And then there are separate conservatories like Oberlin, Lawrence, Hartt, & Bard which are affiliated with a college. The difference between a School of Music and a conservatory attached/affiliated with a college is probably minimal but may affect the general education requirements for the degree.
Not all conservatories are strong in jazz. And sometimes, such as at Bard College or Vassar or Williams, jazz studies would just be a path offered through the music dept. (Note to readers, as it’s often a point of confusion - Bard Conservatory is purely classical - all other fields of music are taught through Bard College.)
In general, if your son is interested in taking a range of academic courses, he would benefit from going to a program which is in some way attached to an academic institution.
@tenniswimvball You’re thinking of Yale School of Music which is a graduate school only and for which tuition is waived for all grad students. As for jazz at Yale College (not the School of Music), they’re in the process of rebuilding. Jazz had been relatively ignored at Yale for awhile.