The e-Rapor application is used at SDN Pinang Ranti 05 Pagi to support the recording and management of student learning outcomes. However, its usability has not been formally evaluated. This study evaluates the usability of the application using the System Usability Scale (SUS). A quantitative approach was applied by distributing a SUS questionnaire through Google Forms to 20 respondents, including teachers, the principal, and the school operator. The responses were analyzed using the SUS scoring method and descriptive statistics. The evaluation produced an average SUS score of 73.12, which is classified as Acceptable with a Grade C rating. The results suggest that users generally find the application easy to use and helpful in carrying out student assessment activities. Most respondents gave positive responses to the application's functionality and interface consistency. Nevertheless, several aspects, including navigation, workflow, and user guidance, still require improvement to make the application easier to operate and to provide a better user experience.
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