I am extremely anti-homework, you know. like I genuinely believe homework convinced generations of kids that if they can't do something in one night, after a hard school day, on a strict time limit, and without breaks, then they can't do it at all
not to mention rigid grading schemes. imo even when attempts are made to award partial credit, it encourages an all-or-nothing mindset where a thing is right or wrong—and getting halfway there instead of all the way there is a failing
writing assignments try to get around this with structured incremental milestones, but when your rough draft is graded it isn't really a rough draft (not to mention typically only getting one round of feedback, rather than a continuous loop)
I'm not really blaming teachers for this; rigid systems make it easier to increase fairness (less room for favoritism (though it's still a problem)), and they're overworked as it is without having to provide continuous feedback for all their students. it would be different if a teacher had five students instead of thirty
my high school art teacher told me my work was wrong whenever I didn't conform exactly to her expectations of methods and style, and as a result I didn't even really try to do visual art for the next decade
and to quantify creativity is to demean and attack it. you cannot move outside the box of somebody else's expectations - in other words, you cannot create anything new - when you are being rewarded or punished based on how well you met those expectations.