I agree with Hydra. I wouldn't call the SAT/ACT as essentially an IQ test.
IQ tests are classified as an aptitude tests, which are intended to measure your mental abilities and your capacity to learn and understand. They were originally designed to identify children in schools with special needs.
If an "IQ test" asks for general knowledge, grammar, etc, then it's not an IQ test, but an assessment/achievement test to test on what you've learned. Knowing the names of all 206 bones in your body doesn't make you intelligent; it just means you took the time to memorize them all.
With that said, there are so many horrible IQ tests out there that give people an inflated IQ score, and when they finally take a good one, then they claim, "Oh this IQ test is t3h sux0r, I took another IQ test and scored a 184!, therefore this isn't a
reall IQ test".
Most IQ tests you take online
and offline do not pass the reliability, standardization, and validity test, and therefore are not scientifically nor statistically sound. Statistically speaking, your IQ is a continuous random variable and it will always pass the normality test, no doubt about that.
There's a lot of misinformation in this thread, but I think I'm going to stop here.