I'm barely passing with an 83%, and still have to take the final, anything less than 80% is failing...be proud of your grades, you're earning them. I am both "a good test taker" and "a genius", (lol, you all know I'm kidding, right???), but seriously, I once was a straight A student while taking pre-req's, and in all reality, no one breezes through this. If you're pulling 90's you're working for every single point, and if you are being criticized for it, than those people are just jealous. I'm as busy as any one can be, three little kids, work, school, etc. and I know that a lot of people who are working, taking care of a family, and going to school often judge other's who don't have as much going on, but the truth is, it's not easy for anyone, and if you are getting the grades, it's because you work hard for them. Don't let them get you down, you're doing great, and don't get discouraged, you've got this! Best of luck to you!