www.DivorceCare.org
There are around 10 local classes offered every spring and fall geared to help you adjust to your new life. Divorce Care is a national organization so you can go to their website to learn more about the curriculum. The meetings start with a 30-40 minute video on a topic by an expert and then the remainder of the time is used for discussion and support. They have 13 sessions and the last one focuses on God; most are hosted by a church. Some groups also offer the Divorce Care 4 Kids curriculum.
School guidance counselors
Most public school guidance counselors offer some kind of service for children of divorce. Be sure to ask your child's teacher or contact your school's counselor directly to ask about support groups or simply let them know what is happening in your child's life so they can provide appropriate support.