This document describes the development of standardized survey tools for evaluating the impact of programs that support orphans and vulnerable children (OVC). It involved developing a consensus on core impact indicators and questionnaires to measure child and caregiver well-being. The tools were piloted in multiple countries. They are intended to enable comparative assessments across interventions and inform program planning by providing actionable data on outcomes related to education, health, economic status and other domains. The document provides guidance on when and how the tools should be used for different evaluation purposes, such as measuring program impact over time or assessing needs at a population level.