information on student learning outcomes is collected from international surveys national monitoring sample surveys peridodiek peilings onderzoek ppon and jaarlijks peilingsonderzoek van het onderwijsniveau jpon the longitudinal cohort survey school careers cohort onderzoek onderwijsloopbanen cool the standardised test results reported by schools eg results from the lvs or the cito school leavers test and the results from the secondary schoolleaving examinations this student performance data is complemented by a wide range of demographic administrative and contextual data collected by the ministry of education science and culture directly from schools system evaluation also makes use of bron register data based on the unique student number