Go to www.nheri.org to see if there is an answer to the college education question (I think the answer is that most do not have college degrees - like the rest of the population). The answer to the first SAT question is "Yes". But you should know that the answer to the second SAT question is "No" - the SAT isn't mandatory for anybody. Only fairly selective schools require it, and many of those prefer the ACT.
Wonderful site! Thank you!