Implement a course review poll at the end of the year, where every student fills out a sheet regarding things they liked and didn't like about the class.
Feedback is important. Any system that isn't allowed to evolve is going to end up svcking eventually.
It relates because a kid with half brain working can score high on a test yet everyone else is failing clearly shows that something needs to be fix in the learning system.
That's less to do with a poor teacher or poor educational system than it does with a poorly written test. Now what's arguable is what the real cause is. Is the teacher irreconcilably bad at their job, or is it a lack of effort due to long hours, bad pay, and tenure/lack thereof?
Considering the US system, I'd stop separating classes into grades around year seven or eight. In practice this actually wouldn't change much, but it would make it easier for students to progress at their own rate, whether its faster or slower than the expected standard.
I think we as a nation need to invest more in technical colleges and trade schools. This is largely a cultural issue where such programs are considered inferior to a "proper" college education, and I think one method to improve this would be to see these schools expand their liberal arts.
Surely. Grades still "exist" in university, but they show up much less often. You take the classes you're qualified for regardless of age cohort or credit level. Obviously 'freshmen' don't take 'senior' level courses without the prerequisites, but otherwise you're more-or-less free to build your own curriculum. The real mitigating factor here, is that once you're out of high-school the cost of education falls on you (a whole other issue), which motivates people to take the smallest number of the easiest required courses to get out of school with as little debt as possible. Hardly reinforcing of a decent education.
As for trade schools, that's another socioeconomic problem. The cost of school is perceived to be very high while the pay rate or social standing gained from those jobs is viewed as low. Most people either want to be doctors and engineers, or they get disillusioned and forego trade schools and become unskilled workers. I think people either want to have jobs that make them supermodel lawyers, or to paraphrase Steinbeck, live their lives as temporarily embarrassed burger-flipping millionaires.