Short answer; It's not.
I had a terrifying experience with school. Let me give you a little rundown of the things that were legally* done to me before high school.
I never went to first grade, identified as extremely gifted, placed into an 2nd grade classroom. Did gifted and talented at the 3rd grade level or above from then on.
now the fun begins.
teacher lets everyone know how much smarter I am than everyone else and how I think I am better than they are. Hated for the rest of my life starting NOW. I did not think this. this was purely out of spite. recieved detention for attempting to check out a harry potter book when I was in 1st/2nd grade. Later held back when no child left behind became a thing, now back in 2nd grade with an ILP doing 3rd through 6th grade work in the span of one year.
Removal of ILP in 2003 sending me back to material I learned in 2002 after acheiving a 3 year gap in education on my own without any help for everything but math. Reintroduction into state testing materials for tests and attempting to hold me back to pad scores again. Switched schools to a high testing score school.
Literally school had a padded prison cell where students who "misbehaved" were kept alone and in isolation. I can prove the school had the room, I can't prove they locked us in it. But they did. We learned key vocabulary words and rudimentary processes then practices using buzz words and vocabulary for 8 open responses a day of which you did more if you achieved less than a 3. We learned to write open responses that when skimmed over would give the appearance of a 4 every time since they didn't actually read all of them. This is most certainly not learning in your eyes, and should have been punishable for watering down my education. It was legal for them to take a student who was by all means a 3-6th grader being allowed to have an ILP to stay with his friends and then take it away and make them do the state testing practice they didn't want to do or have a reason to do, and punish them for discipline when they said "its stupid to make me do this again" because saying stupid to a teacher is punishable. Even when a student is very clearly being punished to help them pad test scores.
Teachers let students fight and bully me almost certainly out of state test score spite. Top scoring school in the state and here comes a new kid out scoring all the robotic taught kids and I came from a school that had the lowest test scores in my area. Really pissed these people off tbh. Probably my biggest mistake in life was doing well at things I thought were easy. Came in 2nd in a spelling bee preliminary to the girl who won state. It took 30 minutes to disqualify me.
Was barred from entering the state spelling bee from kentucky; The year before I came in 2nd to the girl who won the state spelling bee. The next year my school was the only school that didn't participate. They had a testing session that I "couldn't miss" it was "important".
Punished for being disruptive after finishing all of my work in less than 10 minutes for the 2 hour block. The next day I was punished more severely for being quiet and reading instead of doing other work, which they assured me I was lying when I claimed I had finished everything.
your public school system can systematically punish students like this, I was routinely chastised until high school when my school was proud to have a high performing student and was allowed to take more advanced placement classes than were usually allowed etc. Very positive high school experience, detestable grade school experience.
Tl;DR: Ignoring medical emergencies once almost lost a man his job. I had mercy and said I was disruptive beforehand to make him think I was just kidding or something. Teachers legally did detestable things to me for roughly ten years before I finally got left alone. Would have graduated much earlier and had I done so would be much happier today. Was disbarred from doing so by no child left behind and then chastised for being better at school without any help no doubt from my ILP which taught me how to teach myself since I had to do my work alone and without help. All in all I give my public school experience a 0/10 and hope everyone who ever taught me and gave me shit for being gifted ends up poor and in a ditch crying someday for it!