I forgot to mention two other good resources I use. One is the website DIY College Rankings. This website collects data and organizes it on spreadsheets. Look at colleges on that list who give merit because that is where you will find money. You want your son applying where his stats are better than the average applicant. http://diycollegerankings.com/50-50-college-listing-intro/
The other source I love and used for each of my children is the book and website, “The College Solution.” The advice on that website is spot on in terms of finding the most affordable colleges. http://www.thecollegesolution.com/schools-that-award-lots-of-merit-scholarships/ Spend the time to read eveything on this website and facebook page. It is really valuable.