um im sorry you have that backwards with regard to the SAT. The midwest takes the ACT plain and simple. California is a little different in that alot of people take the SAT but also quite a few take the ACT. The east coast takes the SAT plain and simple. The SAT was designed for elite east coast universities and that is the test everyone here on the east coast takes.

That being said it is irrelevant because colleges look at both and weigh them equally so it doesn't matter.