According to USNA's info on validating subjects, they don't administer history validation tests but a combined score of 9 on the US History and either World or European History tests will allow you to validate history. I got a 5 on AP US but haven't taken AP Euro or World. I'd love to take the test and validate the class (I'm pretty sure I could manage a 4). Only problem is I'm already in college. Does anybody know if college students are allowed to sign up for and take AP tests? I'm having trouble finding info on this so if anybody has had experience please enlighten me. Thanks.