Courses for English Medium Instruction Teachers English Medium Instruction, EMI is a module built on CLIL and STEM education in primary and secondary, teaching Science and Maths in English. CLIL stands for Content and Language Integrated Learning and refers to teaching subjects such as science, history and geography to students through a foreign language. STEM is a curriculum based on the idea of educating students in four specific disciplines — science, technology, engineering and mathematics — in an interdisciplinary and applied approach.