IELTS tests the complete range of English language skills which will commonly be encountered by students when studying or training in the medium of English. All candidates take the same Listening and Speaking Modules. There is an option of either Academic or General Training Reading and Writing Modules. Academic is suitable for candidates planning to undertake higher education study. General Training is suitable for candidates planning to undertake non-academic training or work experience, or for immigration purposes.

IELTS is accepted by most Australian, British, Canadian and New Zealand academic institutions. American academic institutions are increasingly accepting IELTS for admissions purposes.

IELTS is accepted by many professional organisations including the New Zealand Immigration Service, the Australian Department of Immigration and Multicultural Affairs, the Australian Medical Council, the UK General Medical Council and the UK Ministry of Defence.