Language instruction is the process of learning or teaching a specific language to one or more people. There are some important facets of language instruction, including whether the language is intended to be primary or secondary, and the entire area of native-language instruction, to wit:

Native-language instruction is the practice of teaching schoolchildren in their native language instead of in the official language of their country of residence. Foreigners on a temporary visit abroad often prefer this, believing that it will keep their children from falling behind their peers at home as they struggle to master a foreign tongue and culture. Japanese on business trips to the United States sometimes send their children to private schools where they are taught in Japanese. The US government maintains schools for its diplomatic and military personnel stationed in such areas as Europe and the Far East. Native-language instruction has also been advocated for the children of recent or longterm immigrants in many Western countries, particularly the United States. In this context it is often called "bilingual education". Advocates tout this over what was previously the sole alternative, i.e., full immersion.