Climate change is a serious threat to human health. Nurses recognize vulnerable populations are disproportionately affected by the consequences from climate change, especially the elderly, pregnant women, and children. Children with asthma and chronic health conditions are at the greatest risk for negative health outcomes and are the most important reason for climate advocacy. This descriptive correlational study seeks to assess the knowledge, attitudes, and behaviors of school nurses related to the health impacts of climate change. School nurses are in a unique position to address the health impacts of climate change and become fierce advocates of climate justice because of population they serve. School-age and adolescent students are particularly vulnerable to the consequences climate change, which include poor air quality, increasing temperatures, and increasing pollen counts. School nurses were invited to participate in the study via email and provided information about the Nurses Climate Change Challenge. It was the goal of the study to assess these domains in school nurses' and later develop continuing education to support the care and advocacy of students. The results suggest more continuing education on climate change and climate conscious care is needed for school nurses. The current challenge is not only to be more prepared to treat a greater number of illnesses induced by climate change, it is also to maintain expertise and adapt to a changing environment. Nurses must address the impact of climate change on a local level by making changes in practice and engaging in research so that they are prepared with the knowledge, and skills to offer expertise in environmental health and the care of school-age populations.