We all know that discipline is ineffective if the parents don't agree. My kids have a D and F already in their grades. My husband's "punishment" for it was to make them turn off the computer at 9pm, no more tv and be in their rooms by 10pm. They are 15 years old. My son can still be on his phone until he goes to bed at 11pm. This seems like regular rules to me. If they don't improve, next week, computer is off at 8pm and the week after at 7pm. Except for weekends when they can watch all they want. At this rate, what is the point? I tell him this is nothing at all and they don't care because they don't even notice this. He gets very grumpy and won't hear a word of it. So, they walk all over us. I can't make a separate rule. My son is oppositional so rules are optional anyway to him.