Would a child starting kindergarten be grounds for custody modification?

In Oregon, a Court can only order "joint" custody on a minor child when both parents agree to joint custody. If one parent does not agree to joint custody, the Court acn only enter a judgment for "sole" custody to one parent or the other with the selection to depend on "the best interst of the child(ren)." Once the Court has entered a judgment for "sole" custody, the only way custody can be changed is for the party wanting the change to be able to show that there has been a "material change in circumstances" since the sole custody judgment was entered. This can be something like one party got arrested for selling drugs, or a party got injured in a car accident and is now unable to walk. On the other hand, when you have a joint custody judgment, the "material change in circumstances" can be "we no longer agree to joint custody." At that point you can argue that the agreement broke down because one parent is not keeping to the agreed parenting plan or that it is bad for the child to try to go to school when he or she is alternating between the parents' homes on a week-to-week basis. In order to change the joint custody plan, the party wanting the change must file Motion for Order to Show Cause for Modification of Custody with the Circuit Court in the County where the original judgment for joint custody was entered. If the forging fits your situation, you should contact a local attorney.