seamless pattern with schoolgirls, schoolboys with books, backpacks and school bags. back to school poster in flat style

and art back background backpack backpacks bags banner book books boy cartoon character child children class collection college colorful cute design device education fashion flat flyer girl graphic group hand happy illustration kids knowledge learning lifestyle male man pattern people person poster pupil school schoolboy schoolboys schoolgirl schoolgirls seamless set smart smile smiling student study style teen teenage teenager teenagers university vector woman young youth