DUMB TEACHERS.

Not saying teachers are dumb...but when it comes to grading...things don't usually work out...
My art teacher graded one of my projects UPSIDE DOWN. What art teacher does that? She wrote "80% for effort" on the back. Well, i confronted her today and she raised it a whole 10% because she realized that she was, in fact, wrong.
My English teacher gave an opinion based test. Everyone in the class got either a 64% (ME!) or 76% of 82%. AND my grade online says i got a 72%...what?!
Teachers are crazy. I don't understand...and they try to blame everything on us.