Ok this is a 4 month late reply but… yes, @eiholi they were useless.
It tells you how you’re doing compared to other students. How other students are doing are irrelevant. My parents figured out how I was doing by looking at my report card or working with me.
They were especially useless for me personally because I scored in the 99th percentile on just about everything. As for correlating later in life, I scored something like 97th percentile on the ACT and I honestly can’t remember what I got on the GRE and that was only last year. It was enough to get me into my top choice PhD program and that’s all I care about.
And sorry, I’m not going to go dig out a test I took ~15-20 years (not to mention several moves) ago. Besides, I’m nearly positive my parents tossed them shortly after receiving them. Furthermore, tracking scores from one test to another is problematic since you’re comparing yourself to different groups of people each time. IOWAs = elementary school students (for me); ACT = largely college-bound students; GRE = graduate school-bound students.