"Day pupils" refers to students who attend a school during the day and return home in the evenings, rather than living at the school's campus. Full definition
It was established in 1982 and costs up to # 1,300 a year for day pupils. (itv.com)
It houses almost 100 boarding pupils with 500 day pupils ranging from ages 7 - 17. (educationbusinessuk.net)
The number of school days pupils are absent for has decreased under Labour, but there seems to have been little success in reducing truancy. (politics.co.uk)