The document discusses different methods of classroom assessment over time, including oral exams among ancient Greeks and Romans and the rise of written exams in the 19th century. It provides details on how modern written exams developed with increasing populations and industry, allowing them to be administered to large groups at once while being carefully proctored. Modern exams typically involve experts writing questions with one correct answer and three incorrect options for students to select from, which can then be quickly graded, often by machine.