Been doing the same thing ! (High school though). Just yesterday I used GPT-3's new Da Vinci model to write an entire essay.

I was SHOCKED. Blown away. I gave it very specific instructions (my essay was about solving a local problem at my school) but with a lot of ambiguity in them. And in less than a minute it wrote an essay better than what I could write in an hour. I was seriously blown away by the quality of it's writing..I actually don't even know how to express my shock.

The best part is that since this is such a cutting edge technology, most people don't even KNOW about it. Hence most teachers don't go through the trouble of "AI checking" your work. The website my school uses for assignments actually has a built in originality check feature which students can use to make sure that plagiarism won't be detected. I used it yesterday and got "no matches found".

Part of me hopes it'll never reach the mainstream just so I can keep this advantage. Not really though, I'm so excited for the future.