back-to-school
adjective: things to do with going back to school after the holidays
Link to present incidents:
If you check out the expression on the internet, it looks as if going back to school was all about shopping for school-related things: Back-to-school shoppers are planning their back-to-school budgets carefully. Many families plan to reuse some items from last year and compare prices online.www.nrf.com/backtoschool