ABSTRACT
Sunlight has a positive effect on mental and physical well-being of people and its sufficiency can increase productivity of workers by 15%. Furthermore, it positively affects groups of people of all ages, especially children. On the contrary, its deficiency can cause sleep disturbances, increased stress level, obesity or fatigue. Therefore the lighting in classrooms and places of visual tasks for students must meet the minimum requirements of lighting limits. This article deals with the representative classroom in which measurements were taken throughout the whole teaching process with the involvement of both natural sunlight and artificial lighting fixtures. Obtained results were compared with values given by the technical standards and legislation. With a help of computer models that are being used in lighting design, there was a new lighting design of classrooms elaborated and the authors also considered all economic benefits of this proposal. There is a presumption that the implementation of this project will improve the well-being of students and thus their study performance. Good visual performance is a prerequisite for labour productivity with all the economic consequences.
