From unique educational perspectives, this article reports a comprehensive review of selected empirical studies 
on artificial intelligence in education (AIEd) published in 1993–2020, as collected in the Web of Sciences 
database and selected AIEd-specialized journals. A total of 40 empirical studies met all selection criteria and 
were fully reviewed using multiple methods, including selected bibliometrics, content analysis and categorical 
meta-trends analysis. This article reports the current state of AIEd research, highlights selected AIEd technologies 
and applications, reviews their proven and potential benefits for education, bridges the gaps between AI technological innovations and their educational applications, and generates practical examples and inspirations for 
both technological experts that create AIEd technologies and educators who spearhead AI innovations in education. It also provides rich discussions on practical implications and future research directions from multiple 
perspectives. The advancement of AIEd calls for critical initiatives to address AI ethics and privacy concerns, and 
requires interdisciplinary and transdisciplinary collaborations in large-scale, longitudinal research and development efforts.