"Teenage boy, 13 years, doing his homework in the classroom at a children's home, Ayacucho, Ayacucho region, Peru, South America"

"Four smiling schoolchilden in the classroom, Germany, Europe"

"Schoolgirl, 9 years, pensive, sitting in front of a blackboard"

"Four grumpy school children in a classroom, Germany, Europe"

"Two schoolgirls in the classroom using a tablet PC, Germany, Europe"

"Boy embracing a girl in the classroom, both are wearing sunglasses, Germany, Europe"

"Schoolgirl, 7 years, reading a book whilst sitting between two stacks of books, in front of a blackboard"

"Schoolgirl, 9 years, reading a book whilst sitting between two stacks of books, in front of a blackboard"

"Overburdened schoolgirl, 9 years, sitting with two piles of books in front of a blackboard"

"Schoolgirl wearing traditional school clothes pointing with a stick on an image board, school, Chiang Rai Province, Northern Thailand, Thailand, Asia"

"Young people working on computers, classroom, township, St. Lucia Estuary, Elephant Coast, KwaZulu-Natal, South Africa, Africa"

Students raising hand in the classroom, elementary school, Lower Saxony, Germany, Europe

Illustration of two students writing at a desk in a classroom

Three students sitting and writing at their desks

Illustration of a boy and a girl in school uniforms

Montage of a sun, a prize ribbon, two students in uniform and a school building

Teenagers talking and holding their school books

Teacher and students in a class, with a girl raising her hand

Three teenage girls in school uniforms

A teenage girl on a tree swing and a school in the background

Side view of student studying with concentration

Illustration of school children seated in a row in front of a chalkboard

A boy cheating on an exam

A boy escaping a classroom through the window

Teenage schoolgirl in the classroom