The International English Language Testing System, or IELTS, is an international standardized 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.
Score / grade validity: 24 Months.
Score / grade range: 0 to 9, in 0.5 band increments.
The annual number of test-takers: Over 3 million in 2017.
Scores/grades used by More than 10,000 colleges, agencies and other institutions in over 140 countries.
Knowledge/skills tested: Listening, reading, writing and speaking of the English language.
Countries / regions: More than 1,200 test centres in over 140 countries.