Music conservatories are currently filed as venues, as “other” or with no set place type at all. Could we use something like “Music school”? “Educational”?
It would be nice to navigate this as Place>Educational>Royal Academy of Music>Alumni to see a list of graduates.
I did create a ticket a while back to add Educational Institution to the list of Place types. Admittedly I didn’t have music conservatories in mind when I made the ticket, but now that you mention it it sounds workable (with some associated relationships such as “attended”).
Did you see my ticket for an “associated with” relationship? (That was the best terminology I could come up with; it’s meant for school-affiliated groups such as orchestras, choirs and marching bands.)