You can get a city license by answering correctly 97 of the 150 questions on the Sightseeing Guide Exam, which covers topics like landmarks, subway lines and history.

WSJ: Ever More Pointing, Talking: The Rise of New York City Tour Guides

Staying up late the night before an exam is generally a bad idea, the guide suggests.

BBC: One in three students wears 'lucky exam underwear'

Matt Carter, a teacher at Orca K-8 School in Seattle, has joined in the boycott because he thinks the MAP exam wastes his student's time and does not help guide his teaching.

WSJ: Seattle Teachers Protest Exams