These Guidelines and accompanying Toolkit aim to generate a diagnosis of the education in emergencies data ecosystem at a given point in time, mainly by evaluating the opportunities for integrating humanitarian EiE data systems with development and national institutional education information systems. They include approaches and tools for the identification of the EiE data needs, the mapping of the existing relevant data sources and producers, assessment of the quality of those data sources, and an examination of how data needs are covered by existing data and opportunities to address the identified data gaps. [This report was produced in collaboration with the Section of Migration, Displacement, Emergencies and Education of the Division for Education 2030 within UNESCO's Education Sector.]