The research project Friendship and Identity in School, which is funded by the German ResearchFoundation (DFG), investigates the formation and change of adolescents’ social networks and ethnic identifications. For this purpose, network panel data were collected in nine schools in the federal state of North Rhine-Westphalia, Germany. This field report documents the preparation and collection of the three waves of data, which were completed in May 2013, February 2014, and November 2014, respectively. Portrayed are the design of the study, the development of the questionnaire, sampling procedures and response rates, the field work, and data preparation. In total, 2,100 students of 26 grades (85 classes) were interviewed. A total of 1,668 students took part in the first wave, 1,862 in the second, and 1,889 in the third. 1,249 students took part in all three waves. In a follow-up project, three additional waves will be collected within the same schools.
