Ockham IPS is implementing a study assigned by Nuffic on the impact of Erasmus+ and eTwinning on primary and secondary schools. The main objective of this study is to provide the Erasmus+ NA with information on the impact of Erasmus+ and eTwinning on the organisational embedding of internationalisation at participating schools, the quality and content of teaching and attention to internationalisation and specific themes in the curriculum. The research consisted of a survey among participating schools and four in-depth case studies at schools, in which interviews were held with school management, coordinators, teachers and pupils, in order to collect impact stories.