The proposed work aims at developing a dedicated embedded system for automatic scheduling and communication between an authorized person and the students and staff in educational institutions using Internet of Things (IoT) concept and Constrained Application Protocol (CoAP). Existing structure is running on timer based electric bell, has its own limitations and consistency in time keeping may not be possible due to inaccuracy in techniques used for timing. A gadget is built which automatically rings the bell when the scheduled time matches with the time of Real Time Clock (RTC). The system developed is capable of performing all the necessary timing operations, such as scheduling of regular classes, scheduling of exams, etc., without human interference. Additional facility is also created so that the authorized person can send messages to the concerned in case of emergency meeting, letting off of classes, etc. This dedicated system uses secured IP, low power controller, and operates at low bandwidth. The system is flexible so that it can be used by other educational institutions with secured Internet Protocol (IP) by creating the related firmware using Real Time Operating System (RTOS) to perform the intended tasks.