Focusing on digitalization of answering and automation of grading of tests, this paper describes migration from descriptive test to an objective test format using optical answer sheets. In a specific example, a test was used to generate a class diagram from source code. In doing so, it proposes an answer format that would not impede freedom of answering. It describes the process of trial and error through the development of its proposal as well as the adoption of optical answer sheets and the questions used. It then reports on practice using these answer sheets. In the practical example it presents, grading was completed in approximately 20 minutes from the time the answer sheets were scanned after the test.
