The medium of language is English. Many improve their language fluency as they do the course, both in speaking, comprehension and writing. That said, and understanding the situation all round the world, the course materials and presentations are handed out by the Centre, so that the subject albums are in good English.
You are expected to illustrate, make additional notes, write your reflections, for your own understanding, so that the album is an active guide for your work over the years.
Students have to share their work to the class which results in improving skills of presentation and public speaking.