Health professions scholarship program. If he's in high school, he's a LONG ways away from even worrying about HPSP. Until junior year of college, I wouldn't even worry about talking to a recruiter.
But, a few thoughts:
-Eagle Scout is probably not going to make a difference for HPSP or med school applications
-If you go to on of the public Texas schools, your tuition is some of the lowest in the country, as is cost of living. The numbers might change in 4-5 years, but it might be more financially savvy to go the civilian route all the way and then apply to join the military through the assessions program - where you can get a huge signing bonus and loan assistance
-If you go to an expensive in state school, or out of state school, or private school, or area with a high cost of living, then the finances work a bit more in your favor as you are less likely to take out huge amounts of loans
-He's really got to make sure serving is a priority for him, because right now military medicine is undergoing a lot of changes, and getting more bureacratic. And depending on where you are stationed, and what you specialty is, chances are you will be make less than half of what you can make as a civilian, while dealing with more administrative headaches.
-forums.studentdoctor.net is a good place to go read up on the military medicine forum. You'll see a lot of people at different stages of their career be very blunt and open about why they like it or don't.
-Depending on which service he joins, and which specialty he wants, there is a higher likelihood that he might not get selected for what he would want compared to doing residency as a civilian. That being said, there are a few residencies in the military that are easier to get into
-Doing cool stuff that no other doctors get to do is definitely a perk
