Mandatory 'divorce course' for parents splitting up in Denmark Gone are the days in Denmark when parents could get a divorce with a simple online click -- now they have to complete a course before their marriage can be dissolved. As part of a new divorce law that entered into force on April 1, parents with children under the age of 18 who want to end their marriage must take a 30-minute online course designed to help them and their children adapt as smoothly as possible to their new situation.