My son’s 7th grade English teacher keeps giving him these nightmare word searches

My son's English teacher keeps giving him these absolutely awful word searches to do, where words are often diagonal and backwards. They are easily the longest part of of any of the homework that he has to do, and also likely the least educational. Since he's dyslexic and has ADHD, they are especially horrible, and have become a family chore.

He does have an IEP, and I've written to his teacher about this more than once. He'd rather be writing essays, which also seems like it'd be a better use of his time. I never get a reply and at this point the school year is nearly done anyway. I'm hoping his next teacher isn't like this. If they are I'm going to have to be more aggressive.