Ключевые слова: back, back to school, background, backpack, bag, book, building, caucasian, cheerful, child, childhood, children, class, college, concept, cute, day, education, elementary, first grade, girl, happy, holding, kid, knowledge, learning, lifestyle, little, people, person, portrait, preschool, preschooler, read, school, school bag, school supplies, schoolboy, schoolchildren, schoolgirl, schoolyard, street, student, study, swing, teach, teenager, twirl, woman, young,