User satisfaction with LED-lighting in schools

The retrofitting process from conventional lighting to LED lighting was scientifically monitored in 33 schools from February to October 2014. Therefore 4,300 students and 165 teachers have been asked by paper and pencil questionnaire about their subjective evaluation of lighting conditions before and after LED retrofitting. The results of the study give important insight into the effects of LED refurbishments in schools and on how they change the perception of indoor quality in classrooms. The study shows that LED lighting in classrooms was rated more positively than conventional lighting, although lighting conditions had no influence on reported complaints. The retrofitting process, however, was not taken up and used in teaching.