I don't remember SAT scores. I feel like I did fine though, maybe 90th percentile? I didn't do any test prep, although the high school I went to was super focused on standardized test prep, my mom was not into spending money on that. I took the ACT and got a 29, and I only remember that because it's an easy number to remember, and it got me a full academic scholarship for University. My grades were average in high school because I was swimming 5 hours a day and exhausted. Once I got my life together in college, stopped being obsessed with sports as a priority over school, I graduated near the top of my class which was nice after 3.5 years of really hard work/lots of studying.
6 years after graduating college I recently studied for, and took the GRE because I thought I might like to go to grad school. I did pretty well (already forgot my score numbers, ha) but I was SO stressed and it was hard to get back in the swing of studying/academics/unnecessary vocabulary after 7 years of working in the outdoor industry, not using big words, not having to really..."think" on a higher level, if that makes sense? I studied for a year, which I think was great because I eventually got my brain back in the thinking game, and felt like the process of studying for the GRE prepared me mentally for the idea of grad school and how much work/studying/time I would be spending on academics again. However, I felt like the GRE was the most useless test I've ever taken, in terms of content, and relatedness to anything I ever studied in high school, college, etc. I basically learned entirely new information, tailored exactly to the GRE, but not to any real life studies I could imagine. I'm not sure it even has any bearing on actual intellegence since you are basically memorizing GRE specific information...to me, there was no "innate intelligence" content on that test, but that was just my take away personally.