Grade 12 until 1983. Denmark In Denmark, the twelfth grade is the 3rd G, which is the final year of secondary school. 3.g is equivalent to 3rd grade of secondary school, or gymnasium. This is not compulsory, as education is only compulsory through 9th grade. Students are often 18-19 or older when they finish secondary school. The age of graduation is caused by the fact that Danish children first start school at 6. The reason that many students will be at the age of 20 when they graduate is because some people choose to have one-year gap between the 9th grade and gymnasium's 1st G (the first year of secondary school), where students typically go to special art- or sport-oriented boarding schools or become exchange students all over the world. This is optional though; you can go directly to the first year of secondary school after 9th grade. Finland The twelfth grade is the third and usually last year (a fourth-year is possible) of high school or secondary school (or Gymnasium) The students graduate from high school usually around 18, with some 17 or 19. The twelfth grade is shorter than the previous ones because the twelfth graders' lessons end in February and they go on to take their final exams shortly afterward. Compulsory education ends after the twelfth grade, and it is completely optional for a student to continue into fourth-year. France The equivalent grade in France is Terminale. It is the third and last year of lycée (the French equivalent to high school), whereby students must sit a test called the Baccalauréat to complete the year. French-language schools that teach the French government curriculum (i.e. are part of the AEFE network) use the same system of grades as their French counterparts. This is not compulsory, as education in France is only compulsory until students turn 16. Germany In Germany, students wishing to take the Abitur usually had to attend the thirteenth grade, but most states are shortening the Gymnasium (the university-bound secondary school system in Germany) from nine to eight years. But the recent tendency is re-introduction of the thirteenth year, as in Bavaria. Greece In Greece, the twelfth (12th) grade is called the third year of lyceum school or high school or upper secondary school (Triti Lykeiou – Τρίτη Λυκείου). Hong Kong In Hong Kong, 12th grade is called Form 6. Form 6 students are required to