Evaluation of Online Learning Platform Usability Using the System Usability Scale Method and Nielsen's Usability Attributes

Abstract

As digital transformation reshapes the educational landscape, the effectiveness of online learning platforms is critical to student success. This study evaluates the usability of a prominent online learning platform utilized by high school students across SMA, SMK, and MA levels. To ensure a comprehensive assessment, the evaluation employed a dual-methodological approach: the System Usability Scale (SUS) and Nielsen’s Attributes of Usability (NAU). Primary data were gathered through structured questionnaires distributed to 115 active users. The quantitative analysis revealed that the platform achieved an average SUS score of 75.5. This score falls into the "Good" category (Grade B), signifying a high degree of user-friendliness and general acceptability among its target demographic. Further analysis of Nielsen’s five attributes—learnability, efficiency, memorability, errors, and satisfaction—showed consistently high performance. Each attribute exceeded an average score of 4.21 on a Likert scale. Notably, learnability emerged as the strongest dimension (4.386), suggesting that new users find the interface intuitive. Conversely, memorability received the lowest relative score (4.293). These findings indicate that while the platform provides a positive and accessible experience, there is room for optimization. Future development should prioritize enhancing usage efficiency and reinforcing memorability to ensure that infrequent users can navigate the system without a steep re-learning curve, thereby maximizing the overall educational impact.