Unterrichtssprache - Working Language

The choice of a working language influences the content and type of discussions and creates in and out groups. At an art university in the German-speaking world, should one speak English due to the large international audience, or should one speak German because it feels unnatural when a majority of German-speaking students communicate in English? Language excludes those who do not speak it and is thus not a neutral carrier of information.

Short CVs of the authors: