In all European Union school systems, it is mandatory to study at least one foreign language at some stage during the school career; there is a tendency for this to start earlier, even in the first year of primary school. Additional languages can be chosen as an optional subject. The most common foreign language chosen is increasingly English (the most popular first foreign language in 23 of the 25 member states of the European Union which do not have English as the language of instruction), followed by French and German. Some 90% of pupils learn English as a foreign language, whether the choice of language is obligatory or parental. Teaching is largely provided by generalist teachers in primary school and by specialists in middle and secondary schools. An exception to this is Ireland, where Irish Gaelic and English are the only mandatory languages, although the majority of students also study a modern language as it may be compulsory to do so at second level.