UNESCO has developed a new tool called SERAT to analyze HIV prevention and sexuality education programmes at primary and secondary school levels. SERAT is an Excel based tool that supports the collection of data on HIV prevention and sexuality education programmes. Its purpose is: To review school-based HIV prevention and sexuality education programmes based on international evidence and good practice; To provide data to inform improvement or reform of programmes; To assess programme effectiveness by focusing on health data and other social criteria (notably gender) when looking at its strengths and weaknesses; To inform debate and advocacy by making available data on sexuality education that is understandable, easy to analyse and accessible to different audiences.