is not required. The students are 15–16 years old. Ninth grade is the year of first final exams and the last year of "folkeskolen" (the first 10 years of education. Starts from 0th grade to 9th grade). After they can choose the 10th grade, or go to a brand new school of higher education for two (HF, 2-year STX)or three years (STX, HHX, HTX). The first year of higher education is called 1.g (16–17 years old), the second year is 2.g (17-18) and the third year is 3.g (18-19). The age depends on when one started 0th grade and if one took 10th grade. When a student finishes 3.g, they get a white hat (studenterhue), with either a blue or a red ribbon around it. The colour of the ribbon depends on the school (HF = light blue, HTX = dark purple, HHX = blue; STX = red). An education at STX involves all the lessons one can have in Denmark, while HHX and HTX are typically the lessons one chooses. After those two or three years, a student can go to a university/college to get even higher education (usually at the years of 19/20 until they finish). In STX, a student learns Danish, French/Spanish/German/Italian (at least one these), English, math, physics, chemistry, biology, health, Latin, nature geography, GLU (general language understanding), art/drama/media course/music (at least one of these as artistic lessons), history, psychology/philosophy, classical studies, and social studies. In HHX, HTX a student chooses some of these lessons. A student can have the lessons on an A-level (means every three years), B-level (two of the years), C-level (one of the years). In STX a student must have Danish and history at an A-level, and English at either A or B. The rest can be made up by choice, and it can be changed. The levels of the lessons also depend on the subject line one chose. There are the linguistic lines, the social study lines, the math lines, the chemistry lines, the physics lines, the biotech lines, the music lines and sports lines. Health lessons are either on a C or B-level, but no matter what one chose they have it every year. A student goes to exams in 1.g, 2.g and 3.g. The grades are following (starting with the worst, ending with the best): -3: unacceptable. 00: failed. 02: acceptable. 4: low average. 7: high average. 10: over