“As researched for another thread, Hamilton College offers 40 courses in its math department, with 34 of those above the introductory level. If there is a significant advantage in depth in getting an undergraduate math degree from a university, then I have yet to have been made aware of what it would be based on.”
Although I’m sure this won’t relate to PAO’s son, I myself (who is currently majoring in CS) was eligible for Modern Algebra during my first year summer. If I had gone in this pace, by the end of my second year summer (if I was pursuing pure math), I would have had no pure math courses to take from Hamilton College. If the son is truly dedicated in mathematics area and regularly takes two to four math courses, then no, I do not really think liberal art colleges are the best choice.
That being said, I think I did mention Williams being good at math ^^