Ключевые слова: a, academic, achievement, alphabet, assessment, background, best, black, blackboard, chalk, chalkboard, class, closeup, college, copy, education, evaluation, exam, excellent, grade, homework, intelligence, knowledge, learn, lesson, letter, mark, object, paper, perfect, plus, pupil, result, school, score, sign, space, student, study, success, symbol, system, test, text, top, university, view, work, write, written,