Working 15 hours a day is very tiring. I know this from first-hand experience. As the first term exam approaches, we, the teachers at my school, need to prepare all the examination papers. After trying to prepare a set of English exam papers and a few sets of worksheets, I've realised the task is not as straightforward and easy as it may seem. Please do appreciate the worksheets, tests and exam papers teachers have prepared for you. In a previous column, I mentioned that all these materials are teachers' artwork . As you might have realised, some teachers use exercises from exercise books. Yet putting them in order of difficulty and selecting the exercises and supporting materials is an art. Setting an exam paper is a complicated and artistic task. We have to determine a fair marking system, come up with easy-to-understand instructions and design an easy-to-follow answer book. What makes setting exam papers all the more challenging is that sometimes teachers have to struggle when deciding whether to make an exam difficult or not. On one hand, we don't want you to fail; on the other hand, we want you to face challenges. That's why we spend so much time thinking it over. And that's also why teachers work long hours. From my new point of view as a teacher, I have a perspective that differs from the one I had as a secondary student. I used to take everything for granted. Now that I've tried to create something, I realise that everything is a result of hard work by many people. Take, for example, the newspaper you are reading. It is the result of a joint effort by many people. When you receive worksheets, make good use of them to practise. When you receive test or exam papers, make good use of them to show off your knowledge. Show teachers your effort while we show you ours - in the form of tailor-made papers that we have prepared for you.