© High angle view of friends studying while sitting on footpath during sunny day

© High angle view of schoolboy using smart phone while sitting on footpath during sunny day

© High angle view of friends using mobile phones while studying on footpath during sunny day

© High angle view of friends using smart phones while sitting on footpath by wall during sunny day

© High angle view of friends studying while sitting on footpath during sunny day

© High angle view of teacher with students using computers in classroom

© High angle view of children in school

© Full length of smiling student holding books while walking against school bus on road

© Teenage girls (14-15) playing volleyball

© USA, California, Petaluma

© Portrait of confident student sitting on skateboard against weathered wall

© High angle portrait of boy in graduation gown standing on grassy field at park

© High angle portrait of smiling boy in graduation gown standing on grassy field at park

© Portrait of female high school students (16-17)

© Portrait of teenage girl (16-17) with volleyball

© Portrait of girl (12-13) in sports uniform

© Portrait of teenage volleyball players (14-15, 16-17)

© USA, California, Cheerleader on phone at school

© Teenage girls (12-13, 14-15, 16-17) talking with coach

© Teenage girls (14-15, 16-17) talking with coach

© Portrait of teenage volleyball players (14-15, 16-17)

© Volleyball team (14-15, 16-17) exercising with coach

© Portrait of teenage girl (14-15) with volleyball

© Teenage girl (14-15) playing volleyball

© Teenage girl (16-17) raising arms at school gymnasium