Ключевые слова: academic, academy, backdrop, background, beginning, black, blackboard, chalkboard, class, classroom, clean, closeup, college, copy space, course, dark, education, educational, educative, elementary, empty, high school, instruction, learning, lesson, old, presentation, primary, reusable, school, scratch, scratched, seminary, start, study, surface, training, university, vintage, washed,