Ключевые слова: american, back, back to school, background, backpack, bag, book, briefcase, building, caucasian, cheerful, child, childhood, children, class, class classroom, college, concept, day, diverse middle, education, elementary, ethnic diversity, first grade, girl, happy, holding, knowledge, learning, person, school, schoolboy, schoolchildren, schoolchildren multiethnic, schoolgirl, schoolkids schooluniform, street, student, study, swing, teach, teenage boys, teenager, twirl, young,