For more than two decades, the GREI group (Interuniversity Research Group on Peer Rejection in the School Context) has been committed to improving the coexistence in school context and the affective and social relationships of children aged 6 to 12 years. The best exponent of this commitment is the longitudinal project that the group GREI conducted during the years 2009 to 2016 in seven public schools of Castellón and Seville, whose goal was to facilitate the social and school integration of the students rejected by their peers. We now wish to share in open access with other professionals all the data and mesures generated during this project.

All the information is displayed in GREI Longitudinal Project web