The Luxembourg educational system is unique in that it uses three languages - Luxembourgish, German and French - as mediums of instruction depending on the level of education. Luxembourgish is used in pre-primary and the first two years of primary school, then German is introduced for reading and writing in the first year of primary with French for oral teaching and later written. English is later taught as a foreign language. The history of the system traces back to the oldest secondary school, Athénée de Luxembourg, founded in 1603 by Jesuits. Religion also plays a vital role, with 20% of teachers being clergy, and those deemed to act fraudulently by clergy could be expelled. The modern system aims to