First of all, for children in the United States, 10,080 hours is the exact amount of time you will spend in school, from fifth grade to high school graduation, if you have perfect attendance.
Esiteks, Ühendriikides elavate laste puhul veedab laps täpselt 10 080 tundi koolis viiendast klassist kuni keskkooli lõpetamiseni, kui ta kunagi ei puudu.