Ключевые слова: back, background, black, blackboard, boy, caucasian, child, childhood, children, closeup, depression, education, emotion, emotional, expression, face, family, fear, fright, guy, head, headshot, human, kid, look, male, modern, mouth, people, person, portrait, sad, scared, school, schoolboy, schoolchild, schoolchildren, scream, shocked, stress, student, surprised, teen, teenage, teenagers, white, young, youngster, youth,