Several African countries have abolished secondary school fees in recent years, but there is no systematic evidence on the effectiveness of these initiatives. In this study, we take stock of free secondary education (FSE) initiatives in the region and review their impact on equitable access and the quality of teaching and learning, as well as their cost-effectiveness. We start by discussing the theoretical arguments for and against fee abolition. Second, we look at aggregate statistics on enrollment and transition rates, and find that primary school completion remains far from universal in most countries in the region, meaning that most low-income children are currently ineligible for free secondary education. Third, we provide a comprehensive overview of existing FSE policies in sub-Saharan Africa, showing that almost half of all countries in the region have abolished secondary school fees in the last two decades. Finally, we systemically review the empirical evidence on the impact and effectiveness of recent FSE initiatives. We conclude that free secondary education is an appropriate long-term goal for education systems but can be costly and inequitable in the short run, especially if it diverts resources from primary education. Our review suggests four concrete recommendations for policymakers, which are broadly aligned with the principle of ‘progressive universalism’ in improving access to education.