I subbed today for a high school physics teacher.
My third and fifth periods were both taking a test. During fourth period the teacher I was subbing for (who was out hunting) called to tell me that a bunch of the kids in third period texted her to complain about the test. They said one of the questions was too hard, so she had me tell fifth period to skip that one.
When I was in high school, I don't remember being able to get in touch with the teacher on her day off, let alone be able to beg her into to changing test questions.