Teaching English as a Foreign Language (TEFL) involves helping languages classes to get to grips with English in a country where it is not a main language. In English-speaking countries it is known as Teaching English as a Second Language (TESL).
There are a lot of acronyms in this industry. These include: EAL, EAP, EFL, EIL, ELF, ELT, ESL, ESOL, ESP, TEFL, TESL and TESOL
organising and running specialist courses
planning, preparing and delivering lessons
helping pupils improve their listening, speaking, reading and writing skills via individual and group sessions