Precalc and English were me 2 most useful classes.
"Science" "engineering" and "history" were actually useless. If you were going to get further education, college science eclipses HS science in 1 semester. My Engineering class was the most absurd, it wasn't engineering. History was basically propaganda.
High school needs to end sooner. AP classes are the sign of this.
Here is a thing someone discovered at one point in time. Here is the conclusion. Now do this experiment. You didn't get the right answer? Do it again until you do. Or make up an answer that you think is right enough that you'll get credit. Sure, some people probably figure out what you're supposed to be learning, but I suspect most people just figure out that you should listen to authority and parrot what they expect you to say.
(I take the point, though -- I briefly taught HS math and one of my responses to the perennial "when are we going to use this" question was "most of you have no idea all the things you'll need or want to do yet, and we want to open doors for you.")
I blame your teachers.
There's a host of skills I'd love to have now, don't have the time/energy to learn now, and could have acquired very easily in my rural high school, instead of taking a calculus class I'd already learned on my own the year before, because it was the highest-level math class offered and the one that all the "smart" people were taking.
Looking back at my Canadian (BC) high school history curriculum, it was well-sourced and written, but I think it could have been structured in such a way to encourage youth to understand modern politics better.
I agree that the Canadian history post-1945 wasn’t emphasized enough; it should have been the center-focus. I had a good teacher in the eleventh grade that vocationally extended the curriculum to include things like economic and social issues, but they were a rare one. Honestly, if they spent as much time on The Quiet Revolution or Western Alienation as WWI, I think young British Columbians would be much better off.
Pre-highschool Canadian history was extensively focused on pre-1945 events and pretty focused around Eastern/Acadian history
Now there was nothing in the curriculum that said "Students must learn that Israel can do no wrong" it was just the way he chose to bias his presentation.