@5ish
First, I apologize for all the typos on my post above, it was made from my phone and these fingers do better with a keyboard.
I am recommending these classes BOTH for the transcript and the necessary skills (English Composition) and knowledge (History, Western Civ, Political Science) needed to properly digest and understand the material thrown at an 1L law student. Self teaching does not accomplish the same thing as a college course with a qualified instructor leading the way and providing feedback.
Just as in Yeshiva a bochur will learn with a chavrusa, most law students have study groups. The other members will likely not be former Yeshiva students. Their is an expectation that all students have a basic underlying BA or BS education that would include the above courses and knowledge. The OP’s son would soon find himself an outcast, shunned by other students in study groups and at a disadvantage.
The bochur has no experience with college classes, so suggesting learning in another type of forum will not help him be ready for law school instruction. Yes, many law schools use the Socratic Method of instruction, but the required first year courses in subjects such as Legal research and writing require the underlying English Composition class I suggest.