The factors the court must think about to decide what is in the best interests of a child are listed at section 37(2) of the act and, when family violence is a factor, at section 38 as well. It's important to read and understand the best-interests factors. If you are asking the court to set aside the parts of an agreement about parental responsibilities, parenting time or contact, you'll need to be able to show why the terms of those parts are no longer in the children's best interests.