I did an IQ test back in high school and I have a high IQ but I still did average to below average in school. Tbh idk what having a high IQ means; for me it meant I was qualified to join a separate, special class where I have to pay more than everyone else, have a boring school life with my nerd classmates, and having the worst grade in class because everyone else was actually smart AND dedicated. I also have trouble focusing in class/lectures and remembering things, I'm lazy, and I procrastinate everything. Maybe in some ways I'm smarter than the average person, in terms of knowledge and analytical thinking or whatever, but it's not something you can't achieve with hard work anyway. IQ doesn't matter shit in real world.