User Perceptions of the Lentera Learning Platform: Reanalysis of a Custom Usability Questionnaire

This study re-examines user perceptions of the Lentera learning platform using the 30-response, ten-item questionnaire dataset embedded in the source manuscript. The original report applied the alternating System Usability Scale (SUS) scoring rule and obtained 49.16, although all ten administered statements are positively worded and therefore do not match the directionally alternating SUS instrument. Recalculation reproduces the original arithmetic as 49.1667 but confirms that the value cannot be interpreted as a valid SUS score. Direct analysis of the 300 original responses yields an overall mean of 3.40 on the five-point scale, a respondent-level median of 3.45, and an exploratory Cronbach's alpha of 0.944. Item means range from 3.10 for the usefulness of error messages to 3.60 for perceived search efficiency. The strongest corrected item-total relationship is observed for overall satisfaction, while error handling remains the clearest descriptive area for follow-up. These results support a moderate, generally favorable perception of the platform in this sample, but they do not establish task effectiveness, objective efficiency, or a standardized usability grade. The paper therefore distinguishes custom-survey evidence from SUS benchmarking and outlines a more defensible evaluation design for future Lentera studies.