The present educational system must be digitalised in light of the growth of communication technology and the current confined lifestyle caused by the pandemic’s expansion. However, efforts to digitise education usually encounter two major issues: first, the applications developed are more likely to emphasise the qualities of graphics and animations; second, the multimedia presentation highlighted in the application is a stereotype that causes users to become bored. Thus, the purpose of this research was to look into the effects of Computer Supported Collaborative Learning (CSCL) as a medium for knowledge construction in the School Based Assessment (SBA) environment using the Collaborative Portfolio Assessment (CPA) learning system. The sample comprised 61 students from two Malaysian secondary schools partaking in the History teaching and learning (T&L) process utilising the CPA learning system. The value of Sig. (p-value) was 0.000, less than 0.05, based on the results of the pre and post-test evaluations for both groups of students. In essence, there is a substantial difference in the average test scores of the children before and after the intervention. According to the data, all selected students received an average grade of 80% or better on their 13 task question marks, indicating a good grade on the task questions. Finally, all students interviewed believed that the CPA learning system helped with their studies, especially in learning more about the History subject through quizzes, group projects, and discussion sessions.