EVALUATING TEACHERS

d) Schools should ask students to evaluate their teachers and they should be paid according to how mucho their students learn.

Teachers are teaching bad and our idea is ... ask students to evaluate their teachers, and they should be paid according to if their students learn.

I think that's a good idea because; firstly, if teachers win more money, they would pay more attention to their students. Nevertheless, some students could say to their teacher: I'll give you a ten if you'll give me a ten. And that would be a mistake. In addition, if some kid hate his teachers, he could put bad marks to every teacher.
Finally, I belive that this is imposible to do, because schools should put cameras or something to know if teachers teach well, but I'm sure that schools havn't the needed money to put cameras, and, in thay way, remove the mistakes of the idea???.
In conclusion, we should look for other ways to solve mistakes, if we want...  improve ... students' marks.