Very much agree with this. I often (day-)dream about using a time machine to tell my younger self a few words that would have changed the whole experience drastically. The main advice would be: stop trying to care. You, my young friend, are not the stakeholder in the institutions you're forced to attend. The system doesn't have your well-being and your benefit as a first priority. The interests of the faculty, parents, and in some cases future employers, are much more important, and you have no way to influence that, no matter what you do. When they think about you it's invariably an afterthought and they have a world of incentives to deny reality, bias the analyses, and treat you and your friends as means to some end.

I hated school. I hated the inadequacy of lesson - some were obviously way too easy for me, while others way too hard. The number of lesson hours per week per subject didn't align with my interests nor the difficulty of the subject. The amount of wasted time was staggering. For example, it so happened that I didn't attend high-school for half a year in my fourth semester. I had enough scores in some subjects to pass, but for a few I didn't, and was given a few weeks to prepare for oral exams. I managed to learn half a year worth of biology, history, and chemistry in 3 weeks, and passed the exams. It was a Pyrrhic victory - I passed to the next grade, but at the same time I realized that I'm wasting (6 months - a few weeks) each semester. I started questioning the meaning of going to school; I realized that I could learn faster on my own, then realized that I would have learned a whole lot more if I could learn with a mentor who'd have my best interests in mind. I also realized that no teacher has an interest in working with someone like me, and that the system is actively hostile to all the non-standard approaches and needs. By the next year, I was diagnosed with depression and missed the whole year while trying to come to grips with that harsh reality.

Later on, I was locked in a constant harassment from an English teacher (a second language here). I learned English in private lessons and on the Internet and I was good at it. That was unacceptable for her. I was to sit quietly in the corner and when I tried to participate in the lesson, I was branded her enemy. The unfair treatment was to the point where I barely graduated, yet I got 97% score on the matriculation exam. I had an urge to find her and throw the results in her face, but I knew I would never recover the lost time and expended psychological effort to persevere.

If I could do it all again, I would focus all I had on breaking out of the system. That system very obviously wasn't made for people like me, but I felt helpless, knowing there's no alternative. It was wrong. The alternatives are always there, even if deliberately hidden as to not "encourage abnormal behavior". I could have tried harder to get away from the system that damaged my health and gave me next to nothing in exchange. And if I couldn't find an alternative, I would have changed my attitude at least: look, Mr. teacher, you're being paid to teach me, and I'm not being paid to learn. So, Mr. teacher, act like I'm a paying customer, please. Because otherwise, Mr. teacher, I'll go through all possible means to fuck you up, cheerfully and as a hobby. Just as you've been doing to me all this time.