The first factor is language. German is the official language spoken by 98% of the population as mother tongue. There are distinct differences between the many regional dialects, and also a wide variation in the 'standard' Hochdeutsch spoken from region to region. Slovene is an official language in the southern province of Carinthia. Other minority languages include Croatian (0.5%) and Hungarian (0.1%). All three languages are taught alongside German in some bilingual schools. Another minority language is Slovak.