This document discusses sector analysis, which is the first stage of development planning for an education system. It involves collecting and analyzing data on the education sector to understand its strengths, weaknesses, opportunities, and lessons. Key aspects to analyze include macroeconomic trends, demographics, access to education, quality of education, educational outcomes, costs, and management. The document provides tips for constructing a problem tree and doing a SWOT analysis to understand challenges and opportunities. It also discusses stakeholder analysis to understand how different groups can support or oppose reforms.