Nubatukan District, Lembata Regency, has 42 schools ranging from elementary to senior high school level spread across its villages, yet information on their locations and distribution has not been presented spatially in an accessible way. This study aims to design and build a WebGIS application as a medium for visualizing and managing school location data in the district. The system was developed using PHP, HTML, CSS, JavaScript, and a MySQL database, supported by ArcGIS and Google Earth Pro for spatial data processing, and was tested through blackbox testing and a Likert-scale User Acceptance Test (UAT) involving 44 respondents. Blackbox testing results show that all application functions operate according to the designed requirements, while the UAT obtained a user acceptance rate of 89.13%, categorized as very good. The developed WebGIS application therefore effectively displays the distribution of schools interactively and benefits the community and local government of Nubatukan District in accessing educational information.
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