How can I prove my English proficiency?

If an applicant's first language is English or his/her studies at the university level have been conducted completely in English (written proof from the University is required), he/she is exempted from providing an English language proficiency test. In all other cases, proof of proficiency in the English language is required by providing evidence of at least a 6.5 IELTS score or a TOEFL computer based version (CBT) score of at least 237 or a paper based version (PBT) score of at least 580 or an Internet Based version (IBT) score of at least 92-93.