IELTS or International English Language Testing System tests the language abilities of those aspiring to study or work in countries where English is the primary medium of communication. An acceptable IELTS score is necessary for getting admission in many universities of the United Kingdom, the United States, Australia, Canada, Ireland, New Zealand, etc. IELTS is conducted by three organizations: University of Cambridge ESOL Exams, the British Council, and IDP Education and can be taken up to 4 times in a month in 304 locations across 150 countries.