re: Which is harder? Engineering, Med School, or Law School

Completely different things. Some people are good at math (engineering) or bulk memorization (medical school) or logic and presentation skills (law). Most are only good at one or two. So saying one is harder is tough. Though I'd say medical school is the most rigorous of the three types of programs. It's the hardest to get into and the hardest to graduate in of the three, plus it requires the longest term (4 years undergrad plus 4 years medical school)