Design And Implementation Of Online Examination System Based On Test Question Difficulty Grading

With the continuous deepening of information technology,the online examination system has gradually become scientific and systematic.This research combines the current research status of online examination system and test paper generation strategy at home and abroad.Based on the examination requirements of Lanzhou University,this paper tries to classify the questions based on the theory of education and teaching,and designs and develops the questions based on the current situation of teaching informationization of Lanzhou University.The test question difficulty grading online examination system makes the online examination system more in line with the curriculum assessment teaching needs,and serves the teaching activities of teachers and students of Lanzhou University.The research firstly combs the existing online examination system and test paper generation strategy,laying a good foundation for subsequent design development.Secondly,using product-centered instructional design as the theoretical basis,the characteristics of the user group of Lanzhou University and the needs of users are analyzed.Based on Bloom's teaching target classification theory and classical measurement theory,the scheme design of the difficulty level of test questions is constructed.Following the seven basic principles of software engineering and the stage task objectives of the software life cycle,the online test system based on the test question difficulty grading was designed,developed and tested.Finally,the system is used in the online exam of Lanzhou University to serve online test activities for teachers and students of Lanzhou University.The system can classify and manage the test question information,student information,and test information,which can greatly reduce the repetitive workload of teachers on propositions and examinations.Based on the difficulty level design of the test questions,it is possible to flexibly configure test questions of different difficulty in the test,balance the difficulty of the test paper,maintain the fairness of the test,and prevent the phenomenon of cheating in the test to a certain extent.