Academic grading in Costa Rica is based on a 100-point scale, and sometimes uses an analog 10 point scale. For primary school level, a score of 65/100 is good enough to pass, while in high school and further levels the pass grade is 70/100. Students who attain between 60 and the passing grade get the chance to take an extra test that reviews the whole year's curriculum, and in which a 70 is needed to achieve a pass grade.