I'm doing this thing from the Society of Manufacturing Engineers called Tooling U. Before you start the chapter you have to take a pretest. The pretest can run to 20 questions. Tooling U loves to point out how much better everybody does after they do their study program because the end-of-chapter tests are usually a couple points better than the pretests. They don't like to point out that we often hit SKIP on eighteen fucking bullshit questions because goddamnitletmegetonwithmyliiiiiiiiife. Was their survey an email? Did it come from SurveyMonkey? If so, 20% is fan-fucking-tastic. 46%? That's positively North Korean. If the science teacher wants a better response rate, he should go door-to-door to grok why we only conduct the census every ten years.