The document discusses the role of the Technical Advisory Group (TAG) and its extended version in monitoring progress on Sustainable Development Goal 4 on education. It provides background on the establishment of the TAG in 2014 to develop indicators for education goals, and the recommendation to expand it to include more member states and civil society. It outlines some of the key areas and issues under discussion by the extended TAG related to developing a balanced set of indicators that are relevant, clearly defined, and have available data sources, including how to measure learning outcomes, equity, access, participation, and education quality.