Disability-inclusive laws and policies - while not sufficient on their own to advance substantive equality - are an essential step that all countries can take to advance non-discrimination and equity in education for children and youth with disabilities. This is the first study to comprehensively review national law and policy guarantees in 193 countries to assess the extent to which countries have harmonized national laws and policies with international commitments to inclusive education articulated in the Convention on the Rights of Persons with Disabilities and the Sustainable Development Goals. While strong guarantees exist across diverse countries, we find that notable gaps remain. Forty-six percent of countries do not broadly prohibit disability-based discrimination through the completion of secondary education. Legislation in 35% of countries does not guarantee persons with disabilities access to integrated education in mainstream education environments along with necessary individualized accommodations through the completion of secondary school. Thirty-one percent of countries that make primary education compulsory do not pair compulsory education with guarantees to integration in mainstream education environments and individualized supports for students with disabilities. These findings can inform reforms in countries without national guarantees and bolster support for implementation in countries where strong legal guarantees to inclusive education already exist.