This document discusses using data on violence against children to guide actions to address the issues. It provides the following key points: - Violence Against Children Surveys (VACS) have been completed in over 20 countries and provide data on physical, sexual, and emotional violence experienced by children. - The data identifies problems, such as high rates of early sexual debut and sexual violence experienced by girls and boys before age 18. It also shows gaps in prevention efforts for ages 9-14. - In Uganda, VACS data was used to help target evidence-based interventions through the DREAMS program, such as parenting programs, in districts with the highest rates of sexual violence and HIV. - Evalu