As the saying goes, you can be poor in anything but education. No matter how unruly a kid is, exams will teach them a lesson.
Everyone praises Teacher Shen for being a great teacher. Only his students silently weep. Pop quizzes, monthly exams, midterms... Teacher Shen insists on treating everyone equally. Even after transmigrating, he still has to give his students those exam-prep workbooks.
Theme: Teaching by example
Come on. Why don't you write anymore?