The International English Language Testing System (IELTS) is an English Language Proficiency Test, mandatory for non-native studies for studying in nations where the mode and medium of instruction is English. Many Universities in the UK, Australia, New Zealand and Canada accept the IELTS. It is a prerequisite for students desirous of studying in Australia - an Australian Student Visa, granted without an IELTS Score is unheard of. All other Universities require students to either take the TOEFL or IELTS.
Highest possible band score is 9.0, Most universities accept a score of 5.5-6.0 for undergrad admission and 6.0-7.0 for graduate admission. In case of low band score, students may have to take English language courses. There are two versions of the IELTS test.
IELTS is jointly managed by: University of Cambridge ESOL Examinations, British Council, and IDP: IELTS Australia