In addition to having a child graduate from USNA, I also have one who went to a traditional small New England school and after a couple of years of work experience, went to Medical School which she is now approaching the end of. We've met many of her fellow students and some of the staff at her DO program on the West Coast. Actually, her advisor was an Enlisted Marine to NAPS to USNA guy who then served as a Marine Officer and then, after his obligated service, went to a DO school and became a surgeon. Looking at this from the standpoint of my stepdaughter, the costs for her program her steep and the payback is not certain due to many changes in the US Healthcare system, both already happening and potential. The high costs don't end after the medical degree as the multiple years of residency will barely pay you to live much less start paying back the big loans that you're considering. Remember also that everyone here is being (very) success oriented. What if something happens in your final year of med school and you're faced with over 600K in loans and NOT a doctor's income.
I'm a BGO and while I do recruit and advocate for the Service Academies, based on what I'm reading, I'm not sure that that is the right path for you but a bet on $700K in loans is not one that I'd recommend for anyone.
PS: I am absolutely not being political here but as a former Intelligence Manager in private industry, I take a fairly dispassionate view of assembling facts to generate data and eventually knowledge. Politics aside, it is a FACT that there are a significant number of people in the country that want our medical system to evolve to a European Model. I don't think that anyone would deny that fact. As that is a possibility, take a look at Physician salaries in the UK, Canada or some other nations who some want us to emulate. Now think about if we gradually evolved to that while you were in training and a year or two or three saw our physician compensation starting to look like those countries. Personally, I'd be very leery of having them on the books as the salaries are adjusting to a new reality.
That is not to say don't do it, I and we need the doctor pipeline to remain open and maybe even widen a bit but consider your costs. I recognize the allure of the big name ivy league school but I've been cared for by MDs and DOs from a wide range of schools and I've not found the specific school they attended to correlate with their skills. I do recognize that the residencies can and do have some effect on that but those don't naturally follow on with the undergrad and med schools.
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Personally, I'd rather my kid go to a 2nd or 3rd tier med school on scholarships/grants/etc than the Ivy for $700K