I'm thinking of not letting my son play his PS4 during the week no matter his grades are when he gets his report card.
I'm a little confused. What are you trying to accomplish?
I want him to behave well and focus more on his studies.
it is good to want you kid to focus on school during the week. You should be honest with them and also still let them be a kid.
It's my kid, I have control and can do it.
Limiting is one thing and that is okay and normal but to ban him seems cruel and mean. So if he comes back with a perfect report card you still won't let him play?