Re: Grades , SAT and Good School.
Mirch bhai, how does your son fare on the ECs front?
Also, the linkage between pre-med programs and good med-schools is not as strict as it's often made out to be. Very often, you'll find students from reasonably good schools with exceptional grades and MCAT scores make it to the best med schools around the nation.
In the end, getting into and succeeding in med schools is contingent upon the candidate's work ethic and resolve to make it through... and less on the pre-med program they came out of. In your son's case, his desire to attempt to better his SAT scores is a good indication of his determination, and I see that as a good thing. I'd certainly let him do it if he feels strongly about it.
As far as a good pre-med program is concerned, the best you can do is short list the schools that he's eligible to get into... and then rank them according to the acceptance rates of their graduates into med schools.