Protocol: Effectiveness of Online Distance Education on Learning Outcomes Among K-12 Students: A Systematic Review

This is the protocol for a Campbell systematic review. The objectives are as follows: To evaluate the effectiveness of online distance education compared to other approaches on K-12 students’ academic performance; to evaluate the effectiveness of online distance education compared to other approaches on K-12 students’ non-academic performance, including classroom participation, learning interest, learning pressure, social skills and social isolation, and; to evaluate the potential moderators between online distance education and students’ performance and other outcomes, such as grade, country, subject, study duration, teaching content and methods, and family circumstances.