In bilingual education, students are taught in two languages. It is distinct from learning a second language as a subject because both languages are used for instruction in different content areas like math, science, and history. The time spent in each language depends on the model. For example, some models focus on providing education in both languages throughout a student's entire education while others gradually transition to education in only one language. The ultimate goal of bilingual education is fluency and literacy in both languages through a variety of strategies such as translanguaging and recasting.

Translanguaging is a term that can refer to different aspects of multilingualism. It can describe the way bilinguals and multilinguals use their linguistic resources to make sense of and interact with the world around them. It can also refer to a pedagogical approach that utilizes more than one language within a classroom lesson. The term "translanguaging" was coined in the 1980s by Cen Williams in his unpublished thesis titled “An Evaluation of Teaching and Learning Methods in the Context of Bilingual Secondary Education.” Williams used the term to describe the practice of using two languages in the same lesson, which differed from many previous methods of bilingual education that tried to separate languages by class, time, or day. In addition, Vogel and Garcia argued that translanguaging theory posits that rather than possessing two or more autonomous language systems, as previously thought when scholars described bilingual or multilingual speakers, bilinguals and multilingual speakers select and deploy their languages from a unitary linguistic repertoire. However, the dissemination of the term, and of the related concept, gained traction decades later due in part to published research by Ofelia García, among others. In this context, translanguaging is an extension of the concept of languaging, the discursive practices of language speakers, but with the additional feature of using multiple languages, often simultaneously. It is a dynamic process in which multilingual speakers navigate complex social and cognitive demands through strategic employment of multiple languages.