[mournit]

I took AP Computer Science in High School. My teacher, who sometimes served as grader for the AP exam, would often tell us of one year in which there was a large number of abysmal tests. Many students could not answer even the most basic of questions. He and the other graders noticed that all of these students were from one particular state.

It turns out that this state had required CS as a subject, but many schools did not have faculty even remotely qualified to teach it. The schools had simply stuck a random math or science teacher in the role, and these teachers had made no effort to learn the content. My teacher told us that in the coding portion of the test, these students would often just write "my teacher did not know computer science, we just sat and browsed the internet all class."