This handbook proposes comprehensive and standard approaches to the analysis of information on educational equity. It addresses knowledge gaps, presents a conceptual framework to measure equity in learning and offers practical guidance on the calculation and interpretation of indicators. The handbook also examines how equity measures are addressed in 75 national education systems, providing concrete recommendations for better data coverage to target the most disadvantaged groups. Lastly, the role of government spending is analysed to shed light on the groups that are most likely to benefit and to examine how resources could be redistributed. To better design policy interventions, countries need solid evidence. This handbook provides the tools needed to produce high-quality, disaggregated data that are essential to ensure no one is left behind.