You perform well in class. You understand the IELTS question types. You’ve worked through the IELTS prep books. But studies show that this doesn’t mean you will do well in the IELTS test itself. Why is this?
Like most IELTS candidates, you probably know which band score you are aiming for. Is it 5.5, 6.0 — perhaps even 7.5? But if you are going to plan your preparation properly, you also need to know how good you are now. How can you find that out?