How many percents of failing students out of your students would you think reasonably? I have 160 students, 40 failed this cycle ~ 25%. I did all my effort to help them out but these kids did not do work, did not study, even did not take the major test, and I got no support or cooperation from parents. When I emailed out, they felt like I was bothering them and got mad at me. Parents just think school is their good day care. What should I do?