I think poor students have its advantages and disadvantages, they can promote your ability of self-control and establish relationship. Bad self control can lead to the opposite side. Teacher should place the proper position. In order to do this, it can not only improve the ability of poor students, but also can improve their grade, why would not do that?
用英语翻译一下这句话（不要用软件翻译），要用名词性从句，谢谢。 我的观点是差生既 有好处也有坏处，他既可以提高你的 自制