Many current national and institutional education policies address the issue of raising participation amongst young people and enhancing employability after leaving school or university. What sort of information are these policies built on? This paper compares national information systems from the last three decades across Europe that gather information on school leavers' and graduates' pathways after compulsory education. Using documentary data collected systematically the paper describes the main focus, the research design and the sampling frame of the school leavers' and graduates' information systems (SLGIS) arriving at several different typologies. This paper gives an overall picture of what sort of research is conducted within the area of school leaving and graduation and points out the advantages and disadvantages of the different approaches. Beyond these, the paper gives an indication of how the school leavers' and graduates' data are used within the different European contexts and points towards the next steps of this meta-research: case-studies on how the school leavers' and graduates' data are applied at the national and the institutional level.