For lots of students all over New Zealand, going back to school today is about settling into a new classroom and reconnecting with mates. For many Mums, going back to school includes figuring out the parent politics and mum groups that form every year. This summer, former High School Musical star Ashley Tisdale shared her experience with adult bullying in an Essay for New York Magazine called Breaking up with my toxic mum group. She describes getting iced out of a Mum's group she joined when her daughter was a baby. Clinical psychologist Dr. Christie Ferrari hears versions of this story all the time and offers advice on how to handle mean-mum dynamics.