The document discusses the differences between teaching English as a foreign language (EFL) and English as a second language (ESL). It explains that EFL refers to teaching English in countries where it is not the dominant or widely spoken language, while ESL refers to teaching English in countries where it is spoken regularly. The document outlines some key distinctions in the approaches to teaching EFL versus ESL, noting that ESL instruction assumes students have more exposure to English models in their community and schools compared to EFL students.