These programs below are primarily for college students and young professionals. A few might allow highly qualified high school students as well. If you are looking for camps for younger musicians, please go here to find appropriate camps. (I do have a list of summer music camps for a variety of ages, but I’ve not updated it since 2005.)
Do note that full tuition scholarships don’t necessarily include housing and meals.
Colorado College’s Summer Music Festival
Sarasota Music Festival (full tuition scholarships for all students)
[...] SUMMER PROGRAMS [...]