IELTS The International English Language Testing System, or IELTS, is an international standardised test of English language proficiency for non-native English language speakers.

Certificate validity: 2 years

Score / grade range: 0 to 9, in 0.5 band increments. Most Universities overseas accept 6 and 7 for undergraduate and post graduate programs respectively.
Scores / grades used by: More than 10,000 colleges, agencies and other institutions in over 130 countries.
Knowledge / skills tested: Listening, reading, writing and speaking of the English language.