“Why did the students flunk the final exam at the Magician’s School?”/“They were all trick questions.”

A “trick question” shouldn’t be confused with a question about tricks, but there are jokes.
 
“Why did the students flunk the final exam at the Magician’s School? They were all trick questions. (Lee Daniel Quinn)” was posted on the newsgroup alt.humor.puns on March 15, 2003. “Why did the students flunk the final exam at the Magician’s School? They were all trick questions” was posted on X/Twitter by Deborah Austin on June 1, 2009.
 
“I went to Magician’s School but flunked the final exam. They were all trick questions” was posted on X/Twitter by Jim Huddleston on July 27, 2017. “I went to school for magicians but failed the final exam. They were all trick questions” was posted on X/Twitter by Ultimate Dad Jokes on February 11, 2024.
   
     
Wikipedia:  Trick question
A trick question is a question that confuses the person asked. This can be either because it is difficult to answer or because an obvious answer is not a correct one. They include puzzles, riddles and brain teasers.

Google Groups: alt.humor.puns
Puns of the Weak 03-14-03
Stan Kegel
Mar 15, 2003, 12:12:58 AM
(...)
Why did the students flunk the final exam at the Magician’s School?
They were all trick questions. (Lee Daniel Quinn)
     
Google Groups: alt.humor.puns
Kids Puns of the Weak 12-14-04
Stan Kegel
Dec 14, 2004, 2:12:09 PM
(...)
Why did the students flunk the final exam at the Magician’s School?
They were all trick questions. (Lee Daniel Quinn)
 
X/Twitter
Deborah Austin
@DebsSweet
Why did the students flunk the final exam at the Magician’s School?
They were all trick questions.
2:34 AM · Jun 1, 2009
 
X/Twitter
Squiffy The Clown
@Squiffy2
#humor #comedy I went to Magician’s School but flunked the final exam.
It wasn’t my fault though, they were all trick questions.
3:00 AM · Jan 10, 2010
 
X/Twitter
Aaron Chilcott
@AaronOnRadio
Did you hear about the magician who failed his final exam at Magic School? They were all trick questions.
11:05 PM · Sep 25, 2011
 
X/Twitter
Jim Huddleston
@jhuddleston45
I went to Magician’s School but flunked the final exam.
They were all trick questions
9:40 AM · Jul 27, 2017
   
X/Twitter
mikeshumor
@michaelmay
I went to Magician’s School but flunked the final exam.
They were all trick questions
#mikeshumor #magician
11:00 AM · Jul 28, 2017
   
X/Twitter
Ultimate Dad Jokes
@MediocreJoker85
I went to school for magicians but failed the final exam.
They were all trick questions.
5:03 AM · Feb 11, 2024
· 
LaffGaff
Magician School
February 19, 2024 by LaffGaff
I went to school for magicians but failed the final exam.
They were all trick questions.