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.

The term CLIL was coined by David Marsh, University of Jyväskylä, Finland (1994): "CLIL refers to situations where subjects, or parts of subjects, are taught through a foreign language with dual-focused aims, namely the learning of content and the simultaneous learning of a foreign language."

However, CLIL teaching has been practised for many years, from the Babylonian era to the early sixties when bi-lingual education was introduced in many schools around the world. Even if you are unaware of the term CLIL, you may already have been using CLIL methodology for many years.