My experience is in business programs, not law schools, but I have an undergraduate BBA from a tippy-top program, and an MBA from a program ranked in the top 25. The difference was HUGE between the two experiences, and it was all about the students and class discussions. Profs were stellar at both, but the lively and intelligent discussion at the tippy top school made it a MUCH more valuable experience than my time at the top 25 school. I assume the same applies to law achools.