This document defines CLIL (Content and Language Integrated Learning) and discusses its advantages. CLIL integrates language learning with the learning of non-language subjects. It can be effective if students are exposed to the foreign language for a long time, can interact with others, and adjustments are made to help with comprehension. Potential advantages include a natural approach to language learning, development of thinking skills, and enhancement of the curriculum. Drawbacks include the need for well-trained teachers and adequate support materials.