Abbas Ali Rezaee - Associate Professor, University of Tehran, Iran
Sajjad Fathi - M.A. in TEFL, University of Tehran, Iran

Code-switching (CS), an alternation between two or more languages or language varieties, has long been researched in language education. A great number of studies by applied linguists have explored the reasons for, and the potential usages of code-switching in foreign language education over the past years. This study explores the perceptions of English language learners across various proficiency levels concerning teachers’ use of CS, in this case Farsi in English classrooms. It also examines the roles and functions of CS in the classroom. Fifty teachers and 105 language learners from University of Tehran Language Center (UTLC) in Tehran, Iran were involved in this study. The necessary data were obtained through questionnaires. The results suggested that the Elementary (EL) learners seem to benefit from the teachers use of first language in class, whereas English-only classroom is preferred by Intermediate (IN) and Upper Intermediate (UI) ones. It was also revealed that maximum exposure of the learners to the target language seems necessary. The results suggest that, concerning the learners levels (EL, IN and UI), teachers’ and learners’ Code Switching can work as a useful language teaching strategy. The findings of this study can have implications for English as a Foreign Language (EFL) classrooms and can be used by language teachers.

code-switching, functions, proficiency levels, target language, first language, language education