The 2023 edition of 'Key data on teaching languages at school in Europe' depicts the main education policies related to the teaching of languages in schools in 39 European education systems. It answers questions about the number and range of foreign languages studied by students, the instruction time dedicated to foreign language teaching, the language support provided for newly arrived migrant students, the transnational mobility of foreign language teachers as well as many other topics. The report contains 51 indicators that are organised in five different chapters: Context, Organisation, Participation, Teachers and Teaching Processes. A variety of sources were used to build the indicators, and these include the Eurydice Network, Eurostat, and the OECD's PISA and TALIS international surveys. Eurydice data cover all countries of the European Union as well as Albania, Bosnia and Herzegovina, Switzerland, Iceland, Liechtenstein, Montenegro, North Macedonia, Norway, Serbia and Türkiye. [For the 2017 Edition, see ED581953.]