Ключевые слова: academic, book, boy, caucasian, child, childhood, children, chin, class, classmate, classroom, desk, education, educational, elementary, expression, face, facial, female, focus, foreground, girl, kid, knowledge, learning, little, looking, male, people, person, portrait, primary, pupil, resting, room, sad, sadness, school, schoolboy, schoolchildren, schoolgirl, stack, student, study, studying, worry, young,