One must love the irony that those tests are mainly use as a way to pat yourself on the back (you and your dad) more than any possible actionable item out of it.
Funny how most people that take an IQ test come out as "geniuses"
Similar in concept to the German Abitur, which originally tracked students into Gymnasium or vocational tracks. Today it comes at the end of a secondary education (high-school) programme, and is comparable to British A-levels.
<https://www.verywellmind.com/history-of-intelligence-testing...>
I have met a couple people that were boasting to me they were in the top 0.01% intelligence wise (as proven by the IQ test! Geniuses!). None of them were particularly successful or looked particularly outliers on intelligence based on what they achieved.
This is by definition false.
But the only people I ever hear taking an IQ tests are people that already know they are smart. Why? Because it probably feels good. Because why else? Is there any actionable item out of that test?
Or you are so stupid someone else thinks its a good idea to have you tested to confirm you are challenged
As an adult the actionable item may be to adjust your expectations of yourself. For example if I'm 90IQ and beating myself up about not being a 10x dev despite my efforts, or if I'm 150IQ and feel too unqualified for some intellectual endeavor, I could make adjustments after knowing the truth.
I took one as an adult and my impetus was that I am contrarian about a lot of things, i.e. there are a lot of things I believe that most people don't believe. I wanted to know if I was just a midwit being an idiot contrarian or if there's at least some reason to believe I might have a better idea about things than average people. In the end I scored very highly, so I can now feel more comfortable trusting my own judgement. If I had scored much lower, I would accept I'm probably wrong about a lot more things and stop having such strong opinions.
And this is precisely why I took the test. The only 'official' IQ test I've taken in my life. Psychiatrist told my dad I didn't have enough grit to stick with things I found boring. Guilty as charged. Fortunately grit did eventually happen, about 5 years later.