Description:IELTS is called the International English Language Testing System , which is one of the famous international English standardization tests. It was jointly established in 1989 by the Australian Education International Development Agency (IDP), the Cambridge University Examinations Committee, and the British Council. The University of Cambridge is responsible for related academic standards and test questions, while IDP and the British Council are responsible for regularly holding examinations around the world. Candidates can choose between academic test (Academic) and general and immigration group test (General Training). IELTS scores are accepted by the United Kingdom, Ireland, Australia, Canada, New Zealand, South Africa and other members of the Great Britain Association, as well as more and more American educational institutions and various professional organizations. The results are valid for two years.