A record 1.5 million tests were taken around the world last year under an organisation run by British and Australian educationalists.
This figure reinforces the International English Language Testing System's (IELTS) - jointly owned by the British Council, IELTS Australia and the University of Cambridge ESOL Examinations - position as the world's most popular high-stakes English language test.
The figure also represent 16 consecutive years of global growth.
North America, followed by the Philippines and Hong Kong, experienced the largest growth over the year, while the mainland, Australia and India continue to retain their positions as the largest markets for IELTS.
Tony Pollock, CEO of IDP Education in Australia, speaking on behalf of the three IELTS partners, said: 'We believe the increase in the number of IELTS tests can be attributed to two key factors.
'Firstly, we have seen greater test accessibility, with 800 locations in 130 countries now available.