2+2=5

In 9th grade College Prep Science our first test had small font instructions at the top

"Every answer on this test is A; regardless of whether it's correct or not. Example: A) 2+2=5 is the correct answer. Any other answer will be counted wrong even if the answer is right. Example: B) 2+2=4 will be counted wrong."

The instructions in large print were:

"CHOOSE THE CORRECT ANSWER FROM THE CHOICES BELOW:"

It was to teach us to read instructions. 

Me and my best friend tapped the top of the page - we were among the few that got a 100.

The teacher repeated the test the following Spring. Not everyone made a 100.