Calculus is only required by a handful of schools although it is recommended at many others:
http://www.dartmouth.edu/~nss/nav/pages/advice/MedSchlMathReq08rev.pdf
...and most of the ones that do require math only require 1 semester of Calc and maybe another semester of stats. In terms of AP credit, many accept it but many don't...I don't have a list on hand, so it would be safe to not limit your options and still take a semester of it in college. If you do well on the AP you could place out of Calc I and take Calc II...or...you could care less what you get on the exam and just take Calc I
and get a good grade in the class 🙂 to boost your GPA (that being said somebody already in college is probably more knowledgeable than I).
In terms of non pre-req courses ex. psych, sociology they don't really care.