I somehow managed to be person who least attended my last three years of high school. Which is pretty unusual for someone on the highest, 3rd-tier track which over here is what you need to do to attend college. For comparison, the 1st-tier is stereotyped as pot-smoking dropouts who can only go to vocation schools after finishing high school.
I didn't realize that my attendance was tracked, because there was a pretty laissez-faire attitude all-around. Most teachers liked me because when I did show up, I was actively present, and the only moment that might've caused me to suspect something was a conversation with a teacher who, in a very friendly way, told me he couldn't give me copies of the notes from the past year because my attendance had been abysmal.
Still, I didn't really think about any of this until the principal called me in and told me he should really expel me. And yet, he was sympathetic to my situation (severe anxiety) and let me off the hook because my grades were okay.
And so in the final months before college I stayed, made sure to attend classes, and finished with acceptable grades.
The very next year (in part perhaps because of me?) the school modernized their systems and I had to listen to the tales of woe from my younger siblings at the same school. None of them could get even close to my behavior because everything was tracked, quantified, part of the new computer system.
My sister got diagnosed with severe ADHD and one of my brothers went for the third-tier track even though he's just as smart as I am.
I'm convinced that the increased measurement and decreased freedom affected them negatively, and I find it very worrying that the siblings that went on to college seem to have similar issues (because, of course, at university I was one of the least-attending students who somehow still got along with the professors and had decent grades).
To be clear, I'm not excusing myself. In hindsight I wish had attended more and put in more effort and played the game better. I'm just saying that I at least had the freedom, in high school and university, to do things my own way and still do okay. this strikes me as very difficult for my younger siblings, because so much more is measured and quantified and required.