Attendance monitoring is an essential activity in educational institutions for maintaining discipline, evaluating student participation, and improving academic management. Traditional attendance systems based on manual entry are time-consuming, error-prone, and vulnerable to proxy attendance. Existing automated methods such as RFID and biometric systems improve automation but require dedicated hardware, maintenance, and additional infrastructure costs. This paper presents a Location-Based Student Attendance Monitoring System that utilizes GPS technology and geo-fencing techniques to automate and authenticate attendance recording. The proposed system allows students to mark attendance only when they are physically present within a predefined geographical boundary such as a classroom or campus area. The system is implemented as a web and mobile-enabled platform that uses smartphone location services for real-time attendance verification. The application captures the student's current GPS coordinates and compares them with stored classroom coordinates using geo-fencing validation. Attendance is successfully recorded only if the student is located within the authorized radius. The system also provides centralized data storage, real-time synchronization, attendance analytics, and an admin dashboard for monitoring and report generation. The proposed solution effectively eliminates proxy attendance, reduces administrative workload, minimizes manual errors, and offers a cost-effective alternative to hardware-based attendance systems. Experimental evaluation demonstrates improved accuracy, reliability, faster attendance processing, and enhanced transparency in attendance management. The system provides a scalable and practical solution for modern educational institutions and can be further enhanced with cloud integration, mobile applications, and intelligent analytics features.