Average years of formal education in the Brazilian states (2006) Source: research data. AC: state of Acre, AM: state of Amazonas, AP: state of Amapá, PA: state of Pará, RO: state of Rondônia, RR: state of Roraima, TO: state of Tocantins, AL: state of Alagoas, BA: state of Bahia, CE: state of Ceara, MA: state of Maranhão, PB: state of Paraíba, PE: state of Pernambuco, PI: state of Piauí, RN: state of Rio Grande do Norte, SE: state of Sergipe, DF: Distrito Federal, GO: state of Goiás, MS: state of Mato Grosso do Sul, MT: state of Mato Grosso, ES: state of Espírito Santo, MG: state of Minas Gerais, RJ: state of Rio de Janeiro, SP: state of Sao Paulo, PR: state of Parana, RS: state of Rio Grande do Sul, and SC: state of Santa Catarina.