Regular reporting on progress for children cross-nationally is the first step to achieving change for all children, highlighting as it does the relative successes and failures across the globe. Given limited time and public resources, countries will need to select the most effective ways to invest in parts of the SDG framework to maximize returns across the board. A good reason for focusing on children in the SDG framework is that supporting progress for children is one promising way to meeting the long-term, multiple ambitions of the SDG agenda.