Just pick him up, put him in the car (even in his pyjamas), take him to school and leave him. OK, if he's in his jamas then send his uniform in with him. No breakfast? Apple in his bag.

Do not blame authorities. He has the opportunity of an education, not an enforced prison sentence. It's attitudes like "tough, you have to, it's not my fault" rather than "school now makes your adult life better as you learn stuff" that make the teachers' lives VERY difficult. I teach children whose parents have that attitude and it really doesn't work for the child - it may get them to school, but it doesn't value learning so the children just play up all day.