Good lighting ensures that students get tired less quickly and can concentrate better on their work. It also helps prevent eye problems such as headaches, eyestrain and blurred vision. Daylight is the best form of lighting because it is natural and healthy. When daylight is not possible, artificial light can be used. Artificial light must meet the requirements for good lighting, such as sufficient light intensity, the correct color temperature and good contrast. It is not only important that the lighting in the classroom is good, but also that the lighting in other rooms at school, such as the library and the computer room, is good. Students must also be able to see clearly and concentrate in these areas.