The first step to become a dentist in Brazil is to take a 10-subject examination (Biology, Physics, Chemistry, Mathematics, Literature, one of the 5 main Languages offered by the institutions, Portuguese, History, Geography and an Essay) which might be compared to the SAT exam in the US. These examinations vary from institution to institution; however, odontology is one of the hardest courses to get in and most students come from upper classes due to the level of difficulty and steep tuition prices. Students must complete the 5-year Bachelor of Dental Surgery (B.D.S.).