RESUMEN
There has been a growth in Australian school-based nurses to address the inequities confronted by vulnerable students and school populations. Failure to address inequities can be evidenced in intergenerational poverty, poorer health and educational attainment and diminished life opportunities. School-based nurses are ideally located to advocate for public health policies and programs that address social determinants that detrimentally affect the health of school populations. However, school-based nurses can confront professional and speciality challenges in extending their efforts beyond individual student advocacy to effect change at the school population level. Guidance is required to redress this situation. This paper describes public health advocacy, the professional and speciality advocacy roles of school-based nurses and the barriers they confront in advocating for the health of school populations and strategies that can be used by key stakeholders to enhance school-based nursing public health advocacy efforts. School-based nurses who are competent, enabled and supported public health advocates are required if we are to achieve substantial and sustained health equity and social justice outcomes for vulnerable school populations.