Want to re-emphasize Collegemom’s post. In the US, undergrad and med school are two different things. Undergrad first for 4 years, then med school. You don’t need to worry at all about which undergrad school has a med program. Take that off of things to consider.
Definitely look at instate options first. Not just the state public’s but some of the less competitive private schools as well.
If your son is able, really prepare for the SAT and retake. If he can get 1500+, that will open more scholarships.
What state do you live in? People can give you suggestions of where to start.
You may also want to search the forum for the premed sub forum and look at posts by wayoutwestmom. She’s the resident expert for premed and med school.
Look at some of the Liberal Arts Colleges like Elon, St Olaf, and Wooster. Your son may see good merit there.
Get the books Colleges that Change Lives and the Fiske Guide. That will help too!