International Baccalaureate Certified by the International Baccalaureate Organization as an IB World School from Early Years through Upper School. Our school’s graduates earn an International Baccalaureate Diploma, considered to be a golden passport to universities around the world. The Keystone School Certified by The Keystone School, Coree International School is authorized to bestow the American High School Diploma to our High School graduates. College Board Certified by the College Board, Coree International School is the only institution in Santa Catarina authorized to apply the SAT – ACT and PSAT exams. Being accredited by the College Board also allows the school to offer advanced courses that can be validated for credit in foreign universities. It’s a major advantage for our students to be able to take these exams in such a familiar environment.