e/Light in school buildings

Information
has gloss	eng: Light in school buildings traditionally is from a combination of daylight and electric light to illuminate classrooms, hallways, cafeterias, offices and other interior areas. Light fixtures currently in use usually provide students and teachers with satisfactory visual performance, i.e., the ability to read a book, have lunch, or play basketball in a gymnasium. However, the impact of light on students’ circadian systems — which may affect test scores, attendance and behavior — also needs to be considered.
lexicalization	eng: Light in school buildings
instance of	(noun) a daily cycle of activity observed in many living organisms circadian rhythm