The present dissertation aims to analyze the experience of the volunteer educator s performance in the Seja Mais Community Pre-university Entrance Exam, developed by Pastoral Universitária Anchieta (PUA) of the Pontifical Catholic University of Rio de Janeiro (PUC-Rio). The Seja Mais Community Pre-university Entrance Examination has a student body from the popular classes that crave access to higher education, it works free of charge and with the support of volunteer teachers who are mostly students from PUC-Rio itself. Through specific objectives, the research sought to investigate the meaning that the Seja Mais Community Pre-university Entrance exam has in the training of volunteer educators; to identify the factors that motivate the volunteers to be part of this project, from the interpretative analyzes of the interviews made with the teachers between the years of 2016 and 2019. The work was divided in three main axes, in the first chapter we trace a history about the configuration and organization of the entrance exams. Based on interdisciplinary axes, we will discuss the issue of access to higher education in Brazil. Second chapter is ded-icated to describing the importance of Affirmative Action policies. The third chapter is dedicated to field research with an emphasis on interviews with a heterogeneous group of volunteer teachers from different areas of knowledge. The testimonies collected from the interviews with teachers present some rele-vant points: personal/professional expectations and experiences obtained in the Seja Mais Community Pre-university Entrance Examination; the motivation to remain as teachers; reconfiguration of citizenship and encouraging voluntary work.