Nah, UAI is pointless. I went to a selective high school, school didn't interest me and did 0 study or work, and got a 77.8. Some of the stupidest people in my year would put in 3 hours a night study during the week, and like 15 hour weekends and got high 90's. However, I would put the house on it that I would have a higher IQ than 80% of my grade, despite like 95% getting higher UAI's. UAI is only relative to what you want to do, and even then there are that many ways to get around it. My whole year was expected to go to uni, but the amount of people that ended up travelling or working, and then could have gone as mature age anyway.
UAI is a test of effort, not ability.
That said, Bunnies man is a dumb f**k and made this thread turn into a joke.