The cross-sectional schools-based PaLS was set up to investigate links between pupils’ peer group status and levels of stress, and the relationships which these both had with mental health and health behaviours like smoking. It surveyed 3,194 pupils in the final year of statutory education (Scottish Secondary 4 – S4, aged 15) in 22 schools in and around Glasgow City in 2006. Data and syntax are held in SPSS format.