In the event this isn't a joke, I'll try to help.
Basically any police department you want to get into has a website, get on there and you can find the answers to all of your questions.
Also, apparently you're a hot chick, but you may want to take down the hot-linked picture if it is indeed a picture of yourself. You're going to have enough of a problem being taken seriously by males in law enforcement, you don't wanna give them any extra ammo they can play with.
If it sounds like I'm being just a bit abrasive, I am. I find it hard to believe that someone who is about to graduate with their bachelor's degree can't figure out where to go to find this information on their own. If you pass the initial written testing and physical testing, you will almost invariably sit down to a panel of officers who will be grilling you to see how you respond under pressure.
My advice? Law enforcement is not for everybody, you may want to volunteer for the local police dept, sheriff's reserve, or do some ride-alongs with your local agency to see if this is really something you want to get into.
Hope that helps.

