IFor such an unfortunate occurrence, the fault should lie primarily with the teacher, not the student, however.
I would have to disagree. At some point the student is responsible for learning and performing. A teacher can't make
a student learn and a teacher can't make
a student perform well on any given day. I have seen people fail tests who were very capable of doing everything required for the grading. They just, for whatever reasons, didn't perform at the expected level on that day. I fail to see how this would be the instructor's fault. The instructor can provide the knowledge, training, and motivation but the student ultimately is the one who must provide an acceptable performance during the test.