IELTS is an acronym for International English Language Testing System. It is a major certification of proficiency in English Language. IELTS
checks and rates the test taker on speaking, reading, writing and listening skills in the language.
English speaking nations in the developed world have used IELTS as a means of qualifying immigrants. In addition, universities in English speaking nations often ask for a proficiency in English test like IELTS before granting admission to international students.