n.

any day on which school is in session

the period of instruction in a school; the time period when schools is in session

同義詞：schoolschooltime

School Day
Children's pedometer-determined physical activity during the segmented school day
How do school-day activity patterns differ with age and gender across adolescence?
Trends in the duration of school-day sleep among 10- to 15-year-old South Australians between 1985 and 2004.
Does lengthening the school day increase students’ academic achievement? Results from a natural experiment in Chile
School day segmented physical activity patterns of high and low active children
parents, friends and school support across a segmented school day
Extending the School Day or School Year A Systematic Review of Research (1985–2009)
Physical activity during the school day in public primary schools in Mexico City.
Lack of short-wavelength light during the school day delays dim light melatonin onset (DLMO) in middle school students.