本研究所建置之系統功能包含班級管理、人員管理、考試科目管理、題庫管理、試卷管理、評量分析與學習診斷功能，由於試題分析方法種類繁多，本系統僅就難度（difficulty）、鑑別度（discrimination）、誘答力（distraction）、S-P表（student problem chart）、差異係數（disparity index）、注意係數（caution index）分析之。
The main purpose of this research was to establish the Web-Based Learning Assessment System (WBLAS) and to discuss the questions as follows: the feasibility of building the WBLAS in the school environment, whether WBLAS could assist teachers to analyze students’ learning difficulties, or to help teachers analyze the test items and build the testing database.
The WBLAS was developed according to the steps of the Instructional System Design Model, i.e. literature analysis to set up its theory base, design for its system functions and framework, development of its system, implementation and test of the system, evaluation of the system to confirm or even offer suggestions to the theory.
The functions of the WBLAS included class management, member management, testing subject management, testing database management, test paper management, evaluation analysis and learning diagnosis, etc. There were various methods to analyze the test items, but the WBLAS would focus on test items like difficulty, discrimination, distraction, student-problem chart (S-P Chart), disparity index, and caution index.
The WBLAS worked smoothly when testing among 132 primary school students. Students were glad to use this system, and teachers also thought that the WBLAS helped a lot to decrease the time of analyzing the test items as well as the time of understanding students’ learning situations. Furthermore, it helped teachers to build the database of well-designed test item.