“He also told us about the green-yellow-red behavior system and said that he won’t get any reds but we should expect a few yellows.”
That’s Mack’s mom reporting on Mack’s first day of kindergarten in 2006. Mack later said that it’s not that he might purposefully break a rule, it’s that you don’t always know the rules. Indeed. It’s difficult to go through kindergarten, or any other part of life, without a few yellows.