English as a second language

English as a second or foreign language is the use of English by speakers with different native languages. Instruction for English-language learners may be known as English as a second language (ESL), English as a foreign language (EFL), English as an additional language (EAL), or English for speakers of other languages (ESOL). English as a foreign language (EFL) is used for non-native English speakers learning English in a country where English is not commonly spoken. The term ESL has been misinterpreted by some to indicate that English would be of secondary importance. However, it simply refers to the order in which the language was learned, consistent with the linguistic terminology of second-language acquisition. The term ESL can be a misnomer for some students who have learned several languages before learning English. The terms English Language Learners (ELL), and more recently English Learners (EL), have been used instead, and the students’ home language and cultures are considered important.

The way English learners are instructed depends on their level of English proficiency and the programs provided in their school or district. In some programs, instructions are taught in both, English and their home language. In other programs, instructions are only in English, but in a manner that is comprehensible to the students (Wright, 2010). Yet, there are other programs in which ELLs are pulled out of the classroom for separate English instruction, or the instruction can also be given in the classroom itself (Wright, 2010).

English as a language has great reach and influence; it is taught all over the world. In English-speaking countries, English language teaching has evolved in two broad directions: instruction for people who intend to live in countries where English dominates and instruction for those who do not. These divisions have grown firmer as the instructors of these two "industries" have used different terminology, followed distinct training qualifications, formed separate professional associations, and so on. Crucially, these two arms have very different funding structures, public in the former and private in the latter, and to some extent this influences the way schools are established and classes are held. Matters are further complicated by the fact that the United States and the United Kingdom, both major engines of the language, describe these categories in different terms.

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