He may have honestly gotten through it, but not by any special achievements, you know what I mean? He does seem capable of learning and regurgitating basic information, if it's fed to him the right way. For example, look in the responses he gives earlier in the thread, specifically the Fox-heavy right-wing stuff. Inaccurate, wrong-headed, false? Oh, yeah. But it's what he was told, and what he wants to believe, ergo he listened to it, then retained it, then puked it up here to try and make waves with us. He failed, not because he couldn't learn or remember things, but because he was too short-sighted to understand that his arguments would not work outside of the bubble they emerged from, a bubble which was reduced in size once the information entered his head.
Once upon a time, somebody must've shown Jon how to use the art program on his computer. He's never employed any new techniques in making his comics since. However, once something went wrong with his laptop, all of a sudden it's Duuuur doooiii! What ma do wid dis? Where dis go? Whahummahummahumma. The simple act of finding a warranty for a computer purchased months ago suddenly becomes more complicated than building a particle accelerator out of bean paste and toenail clippings because Sweet doesn't have the mental capacity to understand the process of Put thing in place where you will find it later or else call customer service.
I would not be surprised if the teachers at ASU went easy on Jon, or if he simply did the work necessary, as outlined in the assignments. When Christian Chandler was told to make a CD cover that did not use copyrighted characters, in the strictest sense, he didn't, the strictest sense meaning that the teacher was probably exhausted from having to deal with this pile of unaddressed mental problems and just wanted to get it over with without him throwing a tantrum. I imagine that's how Jon got through - basic, but nothing special. His behavior was just so foul, they couldn't stand to host him anymore after he graduated.