I have a 4 yr. old daughter who is very smart.She is an only child and mom and dad work full-time jobs while she goes to a church based pre-school.She was in a class of younger 4 yr olds and her behavior was excellent but she was not stimulated enough so we moved her to the older 4 yr old class.She does excellent with her work but has started talking back,not listening,and making noises and rolling all over the place during quiet/nap time.She is constantly in yellow and ignores me while I am talking to her.I have tried time out,no toys,sending her to bed etc..Nothing gets through to her.I get notes sent home daily and even phone calls asking me to talk to her.I don't have a clue what to do..Any suggestions offerred is appreciated.