Congratulations to your grandson. The best advice IMO was by
@T2Kplus10 . Living with high debt can really be stressful when you figure out you picked the wrong job or wrong profession. This happens a lot with lawyers. Pay off any debt asap. Being debt free equals freedom.
A colleague's daughter applied to law schools a couple of years ago. Consider William and Mary. They were very generous with aid/scholarship.
I am nonplussed by school prestige, but I work in a niche area of patents, where any knucklehead like me can go to any law school and there are always more jobs than attorneys to fill those jobs. IMO, if your grandson gets a good deal where he has to pay a minimal amount, give that school heavy consideration. Not everyone wants to work in NYC or a satellite office of a mega firm in NJ for top dollar. And they pay top dollar for a reason--they work new associates to death. Also, while not true for every large law firm, but my general experience is that there can be a lot of stuffy, unpleasant partners that new associates have to work with.
Does your grandson have an idea of a particular area of law he wants to specialize in? It is good to have a plan early on, and there are some schools that may not be the highest rank law schools, but have an excellent reputation and placement success in specialties. The old Franklin Pierce Law School (now I think University of New Hampshire) is an example for patent law--it is a go to law school for hiring by big firms and corporations because of its reputation in patent law.
Finally, does your grandson have a "why" he wants to be a lawyer? I went to a law school with a lot of students who thought practicing law was like the old TV show LA Law, and they came to find out that they were graduating with close to $300K in debt and only able to secure a job paying $50,000 per year (this was back in the 1990s). As I tell many students and my own children NEVER pick a career or job because it pays a lot of money. You have to love what you do, and no amount of money will make a person love a job or a workplace they hate.
Finally again, hopefully this did not come across as gloom and doom. Even if your grandson does not get into a prestigious law school, if he is entrepreneurial, I have found the happiest attorneys (and doing the best financially, which is a plus) are those that went out and started their own firms. We did that 20 years ago, because we did not like the billing practices and the way law firms treated associates and employees. We have a happy family of attorneys and employees, and while not making the same money as big law partners, are very comfortable, and more importantly, we enjoy going to work each day.