You are usually required to submit documentation relating to the last 2 years of your schooling. If you have completed some University level credits (Certificate, Diploma, Degree Transfer Program, etc) you will also be required to submit the most recent transcripts from that program as well as the course outline or syllabus of subjects completed.
All international students who have NOT been studying in an English medium institution in the last 3-5 years, are required to show proof of English proficiency such as TOEFL or IELTS scores.