This study aimed to investigate the amount of code-switching in terms of sentential levels and initiation patterns, the discourse functions of code-switching, and the perceptions of the switchers. Accordingly, 43 students at the elementary level and four of their instructors in two EFL classrooms took part in the study. These participants were chosen through random sampling. Data were collected through observations, questionnaires to students and teachers, and interviews with a selected sample. The results of the quantitative and qualitative analysis of the triangulated data showed that students’ use of code-switching was rather high. Teachers’ code-switching was even higher than expected. In terms of initiation patterns, student-initiated code-switching was quite high whereas in terms of sentential levels, inter-sentential level was observed a little more than intra-sentential level. The analysis of discourse functions revealed that both the students and the teachers employed code-switching mostly for meta-language, which is a function used to talk about grammar or language tasks. The perceptions of all participants on code-switching overlapped in that they believed that it was a tool that fostered learning in beginner levels and could be used to attract attention or for jokes, yet should be abolished as the proficiency level increases.
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