I guess my best wasn't good enough

Today was a rough day for me at school , now if you have been in school or are I'm sure you can relate to this story . In biology , I had a vocab quiz and I had studied for it for a week . I memorized all the definitions , but none of that helped . I got on the quiz and some of the definitions were a little different than the ones I had studied . Sadly I made a 70 :( which is a no bueno for me. The thing that upset me was the guy next to me that didn't even study made a 100 ! I am so mad , but I'm not giving up on making 100.