While the selection process is need-blind and race-blind, most of the best high schools and preparatory schools in Brazil are private and very expensive, and represent a majority of admissions in Brazilian public universities, leading to increased inequality in the country. To remedy this, Unicamp introduced in 2004 the Social Inclusion and Affirmative Action Program (PAAIS, in Portuguese "Programa de Ação Afirmativa e Inclusão Social") that allows high schoolers coming from public schools to receive a bonus score in their overall vestibular score. While not focused on racial and ethnical factors, over the years, the PAAIS initiative has increased the number of admission of minorities from public high school, especially black and native-Brazilians, historically the most economical and social fragile groups in Brazil. With this program, around 30% of admissions come from public schools, and the participation of minorities increased from 10% to around 30%.