A teacher can generate an electronic quiz with questions and model answers. Students will type or otherwise enter free-form responses to the questions. A computing system will cluster similar responses together, and sort the responses based on similarity to the model answer. The computing system will present the sorted responses to the teacher, and the teacher will enter scores for the responses. When subsequent teachers generate electronic quizzes with the same questions, the computing system can use scores entered by previous teachers to rank the responses provided by subsequent students.
Yang, Tynia, "Clustering and Sorting Responses to Short Answers in Electronic Quiz", Technical Disclosure Commons, (March 28, 2017)