Many of us avoid debt for our musician/artist/dancer/actor kids at all costs. For some musicians, grad school in music follows, and that is also a consideration. A doctorate that includes a master’s is often a good way to deal with grad school, if you can get in. (It seems that jazz musicians may go into performance versus grad school, but I cannot generalize since my family does not include a jazz musician).
The freestanding conservatories cost more because they are not part of a university or college. Often freestanding conservatories do not give a lot of financial aid and even the merit aid can be less than needed (see the thread on merit aid). There are less costly alternatives in NY and Boston, so I don’t believe that explanation of cost entirely.
An argument can be made, at least for some musicians, that studying off the beaten path can enhance development before the pressures of the marketplace and competitive stress enter the picture. For instance, Oberlin…Lawrence…Ithace…others…Also, I would add New Orleans for jazz!
I have cited an old study that said music majors, as a group, had the highest admit rate to medical school of any major. This is now obsolete but just want to raise the point that a young person can spend 4 years doing what they love and still choose to go to grad or professional school in law, medicine, nursing, business etc. and/or enter an entirely different career path.
In terms of continuing with music, it is a tough road, but many on here will tell you their kids are making it. Were you referring to teaching privately? Some musicians need a doctorate to teach (sometimes a master’s) but I don’t know about jazz.
There are other job opportunities within music: running festivals, working for talent agencies, working for music non-profits, doing outreach in schools…Interning during college years can also provide skills that can transfer to other types of non-profits.
The Internet and social media, live-streaming and other technological advances (I guess that’s the word?!) have changed things a bit for some musicians.
Finally, your son is still very young. Granted, many musicians develop the work ethic and passion needed during high school, but others come to it late. Some 9th graders may end up with entirely different interests by 12 grade. I would try to avoid defining your son by music prematurely, so to speak. Many parents who are dealing with talent also deal with the need to give the kid space and not make them feel they have to follow the path of their talent Hard as that is…
And as you well know there are satisfactions in being an amateur. Don’t get me wrong, I am kind of passionate about kids pursuing music, but for a 9th grader, it is good to know there are many ways to go.
In fact, some don’t go to music school at all but go to a college or university and do a BA (in music or not) and do music performance as an extracurricular.
Make sure to read the Double Degree Dilemma essay posted closer to the top of this forum. Good luck!