When a youngster is of adequate age, maturity, and understanding, the court will consider his or her preference. There is, however, no set age at which a kid can choose to live with one parent over the other. The decision should be made by a child who is able to understand the nature of this choice and its consequences. In Kansas, if you are unable to make your own decisions because of your youth, then it's best if someone makes those choices for you. A judge will allow a child under 18 years old to petition a court for permission to live with another adult. This other person would then have the same rights as a parent - they could not be denied access to their child unless it was necessary for their own health or safety. The court would also require that this other person assume the role of legal guardian if this was desired by the petitioner. Children between the ages of 8 and 16 can express their wishes on these matters. If they want to live with one parent rather than the other, then the parents should work out some kind of a plan with the help of professionals who know about these things. Sometimes kids will agree to this type of living arrangement so they don't have to change schools - but they should only do this if it is something they feel comfortable with.