In the era of globalization, English Medium Instruction (EMI) has become increasingly common in higher education, especially in countries where English is not the primary language. However, implementing this policy is far from simple. Between the ambition of internationalization and the realities of classroom practice, there remain significant gaps that need to be addressed.
According to Oxford University, EMI refers to the use of English to teach academic subjects (excluding English language courses) in countries where English is not the main language.
In Vietnam and Thailand, EMI is seen as a key tool to help students:
Yet, the English-only model often sparks debate, particularly when adopted without careful assessment of the actual needs and conditions of local institutions.

A survey conducted across universities in Vietnam and Thailand revealed that:
Interestingly, many students prefer lecturers with native-like accents or international study backgrounds, reflecting the widespread belief that “native accents = high-quality teaching.” However, this perception does not always align with actual pedagogical competence.
Although EMI policies emphasize English use, in practice:
That said, the use of the local language in EMI settings is still largely ad-hoc and has yet to be formally recognized as a legitimate teaching approach.
A prominent issue is the tendency to favor lecturers with native accents or overseas education experience. This creates several challenges:
While research in Global Englishes demonstrates that teaching effectiveness is not determined by accent, the native speaker bias still strongly influences higher education practices.
For EMI to truly maximize its benefits, several adjustments are necessary:
EMI is an inevitable trend in higher education in Vietnam and Thailand, offering students greater global opportunities. However, for this model to succeed, universities must:
With these adjustments, EMI can become a truly effective tool, fostering equitable, high-quality, and internationally oriented learning environments.