schrut

Schruty is an adjective used for people who are nerds, but still don't get good grades. Like people who study a lot and are typical nerds, frontbenchers, teacher's pet and that one tattler who complains about every one in the class, AND STILL FAILS AND IS STILL NOT BRIGHT ENOUGH.
So we can say, some kind of annoying, irritating nerd who never achieves results.

"Angela didn't even pass these exams despite studying for hours and kissing all teachers' rare. Gosh, what a schrut."