IoT4Schools is a collaborative project funded under the Erasmus+ program, designed to bring the concept of the Internet of Things (IoT) into secondary school education. Our project focuses on real-world applications of IoT, such as health monitoring, environmental protection, smart cities, and home automation. Through this initiative, we aim to develop students’ engineering skills and expand their knowledge in STEM fields. Additionally, we are committed to enhancing teachers’ competencies, enabling them to effectively teach IoT concepts and facilitate project-based learning in their classrooms.