how do you tell a teacher that her teaching methods are fucking stupid
Respectfully, in private, after class. Then give them your opinions of how they could improve if they consent to listening. Bonus points: consider writing it in an essay form.
Teachers are people too. We’re imperfect little shits every bit as much as the people we teach. We have ten-thousand pressures that our students never see. Moreover, teachers are paid crap wages that will make fry cooks empathize for one of the most difficult jobs on the planet. There is a reason Northern European and especially Asian schools tend to churn out higher educated students: teachers are paid better. Many places with lower barriers to entry and lower pay result in, well, boring teachers who just need to put food on the table and don’t really care about their job. Tenure makes teaching jobs especially cushy, as it’s hard for them to get fired even if they do a shitty job.
What can be said is this: even if these teachers suck, they DO know how to do their job better than you. Harassing and yelling at your teacher to “do better” like in the viral video, although cathartic, is not only counter-productive, but just makes people feel upset/angry/sad, and it’s not cool. Don’t treat people like that, even if you don’t like them - it’s bullying. Instead, raise your concerns with your teacher. If they throw a hissy fit and refuse to listen, speak with an assistant principal or the principal if you can. The teacher is your boss; the principals are THEIR bosses, and their bosses CAN take drastic measures if they see a need and persistent negative performance.
Be the change you wish to see and point out that negative performance respectfully.