This was a few years back but one time my Highschool allowed students to dress up in halloween costumes. You had some funny ones like a guy walking around in a inflatable t-rex suit with his speakers on full blast playing meme music, a duo dressing up as Walter White and Jessie Pinkman in my CS class, but importantly there was that one person dressed up as Vriska, grey bodypaint on the face, accurate horns, their outfit even looked like Vriska's. It was wild to see that when i was rushing to my next class. I basically just blurted out "Vriska???" and then asked to take a photo, thanked them, and ran since i was running late to my class. (My Highschool there just did not give enough time to walk to classes, especially since i had to run from the other side of the school.) Sadly i couldn't find that person again (I'm terrible at recognizing people, especially if i don't get a good look at their face.) but it was wild to find out i wasn't the only Homestuck fan at that school since i did talk about it a bit when i had the chance.

So, don't lose hope. It's not impossible that someone there has read Homestuck.

Oh and as a sidenote: Probably someone at your school has played Deltarune or Undertale, so maybe you could convince them to watch the Homestuck Pilot when it comes out by telling them Toby Fox voices the "Main Character" in it. If i weren't a Homestuck fan, that'd probably pull me in due to how illusive Toby Fox is.