On my school you need to have had 4 years French, 3 years German and 6 years English + exam, when you want to have a diploma. (that is on my level, VWO, which is the higest in Holland, for secondary school that is). And when you want Gymnasium (with classic languages) you need to take an exam in Latin or Greek, and have had atleast 2 years Latin and 1 year Greek. After that another 3 years (Latin, Greek or both if you want) until your exams.