Abstract
Malaysian classrooms are culturally-diverse and used to the practice of switching from one language to another. This practice is known as code-switching. Code-switching takes place not only among students’ communication but also among educators in order to facilitate students’ learning process. The factors of educators code-switching in class has been an area of study frequently explored by scholars. Nonetheless, not many have looked at it from the students’ perspectives in response to what they think about their teachers’ code-witching practice. Therefore, the researcher took the opportunity to look into students’ reaction towards lecturer’s code-switching in class. A survey was distributed to 27 students of B. Sc. (Hons) in Software Engineering to investigate their lecturer’s code-switching in relevance to their affective reaction and their learning success. The aim of this research was to find out whether these students react positively or negatively to their lecturer’s alternation from English to other languages while teaching.