Many issues here - but regarding corporal punishment, it is dolled out buy higher functioning people from a perspective that this would motivate me to behave, but in realty it is typically being applied to people that do not function on that same level, and ultimately pushes them out of the system, from a disruption standpoint, OK. Now the classroom is settled but the individual cost is too high. Different people learn and are motivated in different ways - and per Pareto type sorting, 80% of the students, require 20% of the effort, and visa-versa.
As far as assumptions about education, the US is really in a bad way, parents push their kids hard on too many things and neglect the emphasis academics. All year sports, travel for dance, hockey, baseball, etc. all take priority. My wife is a teacher n NJ and pretty much every year has one student being taken out of school on a regular basis to go to New York to model or to audition... 4th grade!
Then my brother a college prof has students that show up crying after getting a B or a C in bio... "b-b-but I got a 5 on the AP exam..." AP in the US is being taught to pass a test, to get out of college classes... it is not about learning the subject material, it is about getting the paper.
By and large US culture does not value education - grades that lead to a degree that lead to a paycheck.