Most teachers are actually quite good and they're actively being held back by curriculum and being stripped of their autonomy.

I really, truly don't know how people form this opinion. Teachers are trained professionals with certifications and a degree. They know what they're doing. It's extremely likely they're far more educated in the subject matter they teach than you are.

Now, they're not miracle workers. Some parents expect little Timmy reading at a second grade level in Middle School to magically get great scores on his end of year exams. It doesn't work that way.