When you have a student failing in school their are many approaches you take to help that child. Teachers offer tutoring & extra help to improve the childs grade/s. Now if a students is failing becaus eof being late or absent to school theres not so much you can do. All a teacher can do is send home a letter or make a phone call.
Personally i believe that it is the students fault. Yes soemtimes you get to school a little late but you know that you have to get your work regardless. You can not always put the blame on the parents becaus ethey do not attend school with their child/ren. They are they thinking their children is at school getting an education while their at work.
You can ot judge parents parenting skills because you dp not know what goes on in their household, and you are not apart of their familiy.All you can do is help every step of the way to improve that childs grades etc.