This is around the end of their last year in Elementary school (considering it’s spring/summer, Black is 12, White is 11). They used to skip school a lot that year.
I can’t tell why skipping classes in the last year of being in the same school together is their way to rebel against that truth. I mean, if they want to hold on to those days, they’re better spending time IN school right?
I guess that’s their last chance to be mischievous together against the school system.