“On what kind of ships do students study?”/“Scholarships.”

There’s a pun about student scholarships:
 
Q: On what kind of ships do students study?
A: Scholarships.
 
The children’s pun has been cited in print since at least 1976.
 
   
Google Books
Biggest Riddle Book in the World
By Joseph Rosenbloom
New York, NY: Sterling Publishing Company, Inc.
1976
Pg. 22:
On what kind of ships do students study?
Scholarships.
 
22 June 1977, Somerset (PA) Daily American, “Kid Stuff,” Shopper Supplement, pg. 20, col. 1:
On what kind of ships do students study?
 
Google Books
Laughs, Hoots & Giggles
By Joseph Rosenbloom
New York, NY: Sterling Publishing Company, Inc.
1984
Pg. 20:
On what kind of ships do students study?
Scholarships.
 
Google Groups: alt.fan.hanson
Favorite silly joke? (OT)
XoXo Live Music
2/11/03
>The joke is nowhere near funny anyway! Don’t argue about it! Move on to jokes
>worth the time!
okay.
On what kind of ships do students study?
Scholarships.
   
Twitter
Morten Stenbaek
‏@mobitwix
On what kind of ships do students study?Scholarships.
5:45 PM - 30 Jan 2010
 
Twitter
Daily Joker
‏@DailyJokePost
On what kind of ships do students
study?
Scholarships. http://dailyjokepost.com/2040
7:03 AM - 27 Feb 2010
 
Google Books
111 LOL Jokes About School & Wimpy Teachers!:
Jokes, Riddles and Crazy Excuses for Avoiding Homework
By Marcus Stuart, Sir Laughs A. Lot
LOL Kids Books (lolkidsbooks.com)
2015
Pg. ?:
On what kind of ships do students study?
Scholarships.
 
YouTube
Jokes - On what kind of ships do students study? Scholarships.
jokesus
Published on Oct 5, 2015
Joke :
On what kind of ships do students study?
Scholarships.