kengr

And here we see the splinter in the educator's eye.
"I have to assume you are not putting in the effort or that something (a learning disability, perhaps) is preventing you from achieving success with the effort you're applying."

It never enters your head that the failure may be on your side of the desk.

My Daughter is graded on Effort, which is effectively bonus marks for results, or occasionally encouragement, because effort is not obvious in a classroom of 30 kids for 40 minutes a day. This causes her endless frustration because no matter how much effort she puts in, unless her results are high, or improving, she gets marked down for effort. In maths, it is because the teacher is a hopeless communicator. He has repeatedly marked her wrong for doing exactly as he demonstrated on the board. Result correct, working skipped a step or two, as did his worked example.