This paper reports on the self-assessment of future teachers regarding their familiarity with the Convention on the Rights of the Child and their competency to teach about children's rights and participation. A total of 561 future teachers were surveyed in Serbia, Croatia, and Slovenia. They all agreed that, during their studies, they did not acquire sufficient knowledge on children's rights and participation and were not adequately prepared for teaching this content in schools. The authors further suggest an introduction of new study programs and a significant increase in the number of classes dealing with these topics in day-to-day school practice.