[candu]

There are also practical reasons to stuff everyone in one box.

With class sizes steadily growing, teachers are often stretched thin - from speaking with a few friends who happen to be teachers, they also often get lots of well-intentioned advice on pedagogy. Very little of it is actionable, especially when you're already overburdened and have little time to rigorously investigate further, some of it comes with thinly-veiled edtech pitches ("this shiny new tool will solve all your problems for every kid!"), and yet other parts are utter nonsense from helicopter parents who will insist that you're teaching their kid incorrectly no matter what you do.

As a result, it's a lot easier if you can simply teach everyone to the same template - if that works for 90% of kids, that's arguably better than catering to the other 10%, especially if half of that 10% is comfortable with self-directed learning. Plus you can point to standards to argue that you're just doing your job, which is much more straightforward than defending your profession / methods and their value to every last person who believes something random they found off the internet or a vague feeling about how best to educate over those with actual practical and theoretical expertise in the field.