Ключевые слова: back to school, begining, blackboard, boy, chalk, chalkboard, child, children, class, classroom, classroom children, college, education, elementary, elementary students, girl, group, happy, kid, knowledge, learn, lesson, look at camera, looking for, people, person, portrait, primary school, pupil, school, school kids, schoolchildren, smile, student, study, studying, teen, teenager,