In the development of information technology very often people want the challenge of speed, accuracy, and ease of access in an information system that must be met well. The grievance system in SMA Negeri 3 Pandeglang is still less effective ie the students complaint complaint still use the way of recording in the paper or the students come directly to the teacher room in complaint to the homeroom teacher. This causes obstacles faced by the guardian of the class where there is a loss of damage on the complaint complaint paper so that complaints complaints are not conveyed to the homeroom teacher and principal. On the basis of the above problems, researchers create a web-based system is expected to help students in complaints and facilitate homeroom teachers, principals and teachers in handling sustainability of student complaints effectively. In designing the system using UML (Unified Modeling Language) and using waterfall method it proposes an approach to systematic and sequential software development starting from the system advance level on all analysis, design, coding, testing and maintenance.