This study quantifies inequality of opportunity in education in Eswatini using Multiple Indicator Cluster and Demographic and Housing Surveys. Using the “ex-ante” approach, the study identifies potential sources of inequality at all levels of the general education system in Eswatini and how these interplay with learner achievement. The study finds that, on average, circumstances account for a low portion of the variance (approximately 23.7%) in learner attainment. This measure is higher for learners aged 15 to 18 years. This means that, as the learner grows, the influence of unequal circumstances on educational attainment increases. In addition, family background variables like household wealth and education of household head are the main sources of inequality of opportunity. Therefore, opportunity equalising policies are required at all levels of the general education system in Eswatini.