Ключевые слова: academic, adult, arms, back, background, blackboard, boy, camera, caucasian, chalkboard, cheerful, child, class, classroom, college, confident, counselor, crossed, desk, education, elementary, female, girl, happy, kids, knowledge, learn, lesson, male, occupation, people, person, portrait, professional, professor, school, smile, smiling, standing, student, study, talking, teacher, teachers, teaching, university, white, woman, young,