I'm not talking about the color system-- I realize that is widely used. I'm talking about a 7 minute time out on the second warning, rather than actually using the color warning system. THAT is not a widely used behavioral correction in a classroom and seems excessive. I think given that it would cause more behavior problems that it corrected for my children, I would challenge the teacher on it. My kids would lose all respect for the teacher, in addition to being angry about the punishment. That's just our family, though. My kids are sticklers for justice issues. But yes, I would talk to the teacher about it and see if she would reconsider and I would talk to the principal if it was causing problems for my child. I think virtually every experienced educator would realize it's excessive.