It may be a little late to answer now, but I hope it will be useful to the students behind. She is the most irresponsible and worst teacher I have ever seen in my life. She started fooling around because her classmates didn't get good grades. As a math teacher, the blackboard is empty after a class. You heard me right. In geometry class, you didn't draw pictures, so that many people in our class were nervous with her at that time. I think that no matter how many years, I will spit on this teacher. What she did in those years deceived a class of students and insulted the sacred profession of teachers.