Summary:
Published in the open source science journal, Plosone, the study measured illumination levels in the classrooms and combined the analysis with a students’ survey. Five classrooms had no sources of artificial light and were dependent on three or four windows and a door. The recommend distance from the front desk to the board is between 2.3m and 3m but in many classrooms it was greater. But a light or window in the middle of the room and near the last bench made a huge difference. The average lighting prescribed by the BIS is between 150-300 lux at any point in a classroom..