As the digital transformation of education continues to accelerate, smart classrooms, as a new type of teaching space that integrates advanced technology and innovative concepts, are becoming an important engine for leading teaching reform and personalized learning. Whether it is primary and secondary schools, kindergartens or vocational colleges, through the introduction of intelligent information technologies such as the Internet of Things, AI, and big data, smart classrooms (Alfoudari et al., 2021), have greatly optimized the traditional teaching mode and improved the level of teacher-student interaction, data-driven, and resource sharing. This paper will focus on five typical cases, including Gaocheng No. 9 Middle School, Peking University High School, Qingdao Chengyang District Experimental Primary School, Chongqing Second Normal University Affiliated No. 1 Kindergarten, and Jiangyou Vocational Middle School, systematically analyze the practice path and innovation effect of smart classrooms in different school stages and scenarios, and show their practical value and broad prospects in the digital transformation of education.