Browse through our collection of difficult lesson images and stock photos. They are all royalty-free and ready to use for your next project.

Puzzled schoolgirl passing important test

Unhappy sad teen curly girl in white t-shirt crying, closes face with hands, suffer from stress

Sad upset teen curly african american girl in white t-shirt looking at camera, isolated yellow

Sad pensive tired adolescent curly girl in white t-shirt looks at empty space, think