There have been some cases of cheating in the history of the decathlon, the most notable being the 1995 Illinois state finals, in which Steinmetz High School was able to secure copies of the test in advance and defeat perennial powerhouse Whitney Young Magnet High School. This was dramatized in the movie Cheaters.

Since part of the Super Quiz event takes place on a stage in front of an audience and other teammates, there have been instances of cheating occurring at all levels. In order to prevent this, USAD officials have asked that competition venues either have students sit with their back to the crowd or position lighting in such a way that students cannot see the crowd.

In order to keep the contest secure and free from bias in events that are graded by judges (essay, interview, and speech), no identifying information about the student or their school can be given.