In my school AP meant advanced placement, so i thats what my response will be to.
Mine a few years ago was fucking BRUTAL.  It was on a saturday morning, I thought they were joking so I showed up REALLY hung over to get a few laughs.  A few days later, my teacher informally told me to stay after class and said that I made a mockery of modern physics and she was really disapointed in me.  I thought my jokes were clever because there was no fucking way I could solve those problems in grade 11.  True story, that same week I lost all value from a fetal pig lab because I didnt show a professional work ethic (I chopped off his head and put it on a harpoon to get easy access to the brain, me and my partner left for 10 seconds and the teacher thought we were mutilating it.  Then in chemistry I got into a big debate with the teacher over whether solid hydrogen is actually a metal in theory.  But being a closed minded individual he said it was impossible for hydrogen to be a solid, when on Space the exploration station they said there was evidence of solid hydrogen near the "core" of gas planet Jupiter.
I never looked back when I left the field of natural sciences.  that 1 week may have changed my career.