You're part of the problem and know nothing of the shift that these teachers have seen over the last 30 years.
I've seen good schools crumble due to terrible policies and teachers.
You're enabling the problem by apologizing for these poor performing teachers.
Literally all of 8th grade was learning how to count to 10 in other languages and some stupid cross-stitching art. In Math!!!
Luckily I learned through programming on my own time, but once you're behind from one shitty math teacher, it's hard to catch up.