English. The role of English as a lingua franca is believed to be likely to continue, given how heavily staff rely on it, and that in European schools, 97% of children learn English as an additional language, compared with 34% learning French and 23% learning German. Dr Marko Modiano has suggested, in an academic paper, that Euro English could be codified in a similar way to native English varieties following Brexit. Language rules are currently covered, amongst others, by: Article 55 of the Treaty on European Union (TEU) (which lists the 24 "Treaty languages" in which the Treaty is drawn up); Articles 20 and 24 of the Treaty on the Functioning of the European Union (TFEU), which lay down the rights of citizens to petition the European Parliament and to address the institutions in any of the Treaty languages and to obtain a reply in the same language, and Article 342 TFEU, which states that "the rules governing the languages of the institutions of the Union shall, without prejudice to the provisions contained in the Statute of the Court of Justice of the European Union, be determined by the Council, acting unanimously by means of regulations"; and Council Regulation No 1/1958, which lists the current 24 official languages. References Consequences of Brexit Withdrawal from the European Union Geography of the European Union Politics of the European Union Political controversies in the United Kingdom es:Refundación de la Unión Europea#Historia