Since Indian students are writing and speaking in English with Indian accent, with not much exposure to foreign accent, it can be the cause of some penalties they may face in IELTS Listening module.
Category - IELTS
The International English Language Testing System, or IELTS, is an international standardised test of English language proficiency for non-native English language speakers. It is jointly managed by the British Council, IDP: IELTS Australia and Cambridge Assessment English, and was established in 1989.