IELTS is an English language test that is required to be taken by international candidates considering studying or working in a country where English is the main language of communication. The full form of IELTS is International English Language Testing System. Most popular countries where IELTS is accepted for university admissions are UK, Australia, New Zealand, US, Canada. The exam mainly measures the ability of test-takers to communicate in the four basic language skills – Listening, Reading, Speaking, and Writing.
Often international students are confused between choosing IELTS or TOEFL, as universities abroad ask for either exam scores. It is up to you as a test taker to decide which of the two exams to take, but remember that IELTS is more preferred in UK, Australia, and New Zealand, while TOEFL is popular among applicants to universities in US and Canada. So knowing the required average scores for US universities and average scores for Canadian universities is an important start