CLIL stands for Content and Language Integrated Learning and describes a dual-focused form of
teaching a subject: through a foreign language by being at the same time exposed to learning of
content and learning of a foreign language. Since English is a global language this modern
instructional foreign language education provides authentic settings by creating real-world
situations. In this work the challenges of Differentiation in a Primary CLIL classroom will be
examined theoretically as well as analysed according to experiences of teachers of CLIL classes
gained through an interview. The work poses the question how teachers can effectively plan for
CLIL and what competences teachers need to successfully hold a CLIL lesson.
