In recent years, scores of educators and designers have been won over to the view that natural light--provided by the sun instead of bulbs or tubes--is desirable and beneficial for education facilities. Studies that show students performing better in classrooms that have the right kinds of daylighting bear out the intuitive beliefs of many teachers that a classroom with natural light is a more appealing learning climate. But acknowledging that daylight benefits schools will not transform every classroom with a window into an ideal learning environment. For daylighting to have the desired effect on learning and energy costs, designers and educators must plan carefully. This article presents the planning principles involved in daylighting. Tips on how to make the most out of daylight are also presented.