Data collected for the Pilot 3 have been used for the following main purposes: to develop the contents of the PBIS-AR application (task 5.1 “Analysis of PBIS Requirements for ARETE” of WP5 “Interactive AR for PBIS”) to develop the contents of the PBIS behavioral research lessons (task 5.2 “Analysis of PBIS Requirements for ARETE” of WP5”Interactive AR for PBIS”) to investigate the use of AR as a tool for PBIS, evaluating the incremental value of integrating AR contents within PBIS in promoting school-wide and class-wide positive behaviours (task 6.3 of WP6”Pilots’ Implementation Deployment and Evaluation”). All collected data can and will be used to realize publications in academic and popular psychological journals, as well as for poster and oral presentation at conferences. The data will consist of: (1) quantitative data: questionnaire and survey data that will be collected through an online and paper-based survey procedure at one or more time points during the pilot (for specifics, see Annex G “06.2022 - ARETE P3 - Assessment Strategy” of D5.3 “WP5 - D5.3: Analysis of PBIS Requirement for ARETE - Update D5.1”) .