One of the text books approved by the College Board for AP Language and Composition is Jay Henrichs's Thank You for Arguing: What Aristotle, Lincoln, and Homer Simpson Can Teach Us about the Art of Persuasion. You can get your own copy here.
In the second chapter ("2. Set Your Goals: Cicero's Lightbulb"), he mentions a 1974 National Lampoon issue that has a parody of Plato's Republic. That set me down a rabbit hole to find it. Surely it had to be somewhere on the World Wide Web, right?
After some digging, I finally found The Internet Archive's download of the ENTIRE run of National Lampoon. I didn't particularly want the entire run, but it was an all of nothing thing. So I spent the 6 hours downloading this file so that I could get a total of 6 pages of comic. The issue it appears in is their Stupid Issue.
Once I read the parody mentioned, I was rather disappointed. I figured I might find some use for in my class, but I just might not be high-brow enough for the humor. Maybe if I liked Plato more.
So I figured that somewhere out there, there was someone who was using this book for their AP Lang class and they were curious about the comic. So, to that end, here is only the comic:
And here is where you can download the entire run if you are so inclined:
Whichever you decide to do, have fun with it! And if you find a way to make use of that in your class, I would certainly like to hear it! That was a lot of work for nothing! :)