Children enrolled in immersion programs work toward complete proficiency in a second language. FLES programs are more common than immersion programs. A second language is presented as a distinct subject, much like science or social studies. Depending on the frequency of the classes and the opportunity for practice, children in these programs may attain real foreign language expertise. FLEX programs introduce students to other cultures and to language as a general concept.
Time is spent exploring one or more languages or presenting information about language itself.
While these programs can provide a basis for later learning, the emphasis is not on attaining proficiency. In most cases, learning another language enhances a child's English ability. Children can learn much about English by learning the structure of other languages. Common vocabulary also helps children learn the meaning of new words in English. Numerous studies have indicated that foreign language learners score as well as or better than comparison groups on achievement tests conducted in English.