Students who attend English Medium schools in non-English speaking countries like Bangladesh often face difficulties in enhancing their English language proficiency due to the lack of an English-speaking environment at home. This may be due to their parents being unable to speak English. In such circumstances, what are the possible problems that students may face in improving their ability to speak English?
The first and foremost problem is the lack of input that is crucial for foreign language learning. For more detail information, I'd suggest Krashen (1987)'s book entitled "Principles and Practice in Second Language Acquisition"
I think English-medium students whose parents do not speak English at home or are unable to speak English may face a number of challenges, including a limited vocabulary and idiomatic expressions, inadequate language support, and low self-confidence and motivation.