This publication is a report summarising the main longitudinal findings of the Learning and Assessment for Digital Citizenship (e-Citizenship) project, funded by the Research Grants Council of the Hong Kong Special Administrative Region, China, under its Theme-based Research Scheme [Project No. T44-707/16-N]. It was jointly conducted by researchers from the University of Hong Kong and the Hong Kong University of Science and Technology. The preparation of this report was supervised by the project coordinator, Nancy Law.