CLIL (Content and Language Integrated Learning) is a recent teaching approach widely adopted in numerous international contexts, especially in Europe where it was promoted as a way to promote language learning within the educational system. When implemented, CLIL predominantly involves subject content teachers using English to teach their subject.…

This article serves as the introduction to this special issue of "Language Teaching Research" on content-based language teaching (CBLT). The article first provides an illustrative overview of the myriad contexts in which CBLT has been implemented and then homes in on the five studies comprising the special issue, each conducted in a…