The right of exemption in Norwegian schools is a tool to ensure pupils’ and parents' religious and ideological freedom. In recent decades, the topic has received increased attention. Despite the right of exemption's human rights and educational relevance, research is still limited and often a sub-theme in studies with broader issues. Through a systematic review of 45 relevant publications, this article shows a breadth of academic work on the right of exemption and how the topic is subject to ongoing discussion. Only a few works systematically focus on the scheme's scope and practical implications. This knowledge gap makes it difficult to assess how the current legislation plays out in practice. The review maps the knowledge already on the topic. The findings imply that schools should strengthen routines for clear communication and predictability for the educational system. The article also points out that teachers should discuss the right of exemption in interdisciplinary settings to promote a more comprehensive and inclusive practice.