This exam is in 4 parts. The parts are - reading, writing, listening and speaking. Sometimes you might do the speaking and listening in the same place on the same day. You ALWAYS do the reading and the writing together.
All four parts of the exam have the same value - 25% each.
Your total mark is made by adding all these results together. You need to get more than 70% to pass the exam. There is no minimum for each paper, so you can pass even if you get 0 for one part (but it will be very difficult).
The mark you get after the test is one of these - fail: narrow fail: pass: pass with merit. If you fail, your result will also tell you where your English was worst.