What should you pay attention to? Lighting is an important part of creating a pleasant working environment in schools and why lighting fixtures must meet certain requirements. Here are the three most important points about lighting in schools. Unified Glare Factor (UGR) The glare factor determines how much nuisance a person experiences from lighting in a room. Read more Light distribution Light distribution stands for how much light is distributed in a room and how well it is distributed. Read more Number of lux Rooms must meet a certain amount of light. This is expressed in Lux. Read more