Social interaction is a powerful medium in education. In this report, I discuss how computer supported collaborative learning (CSCL) helps K-12 students to enhance learning. I discussed why socio-constructivism in CSCL is a promising learning method. In addition I suggest that CSCL enhances students’ self-driven learning, motivation, and critical thinking. I also examine how CSCL can be successfully implemented in K-12 schools. In this context, the report identifies the challenges posed by technology implementation and changing teachers’ beliefs in introducing this innovation into schools, and how those challenges can be met. Finally, based on perspectives in support of CSCL, the paper does a critical analysis of the Korean e-learning project, which created a national online leaning network for K-12 students, called Cyber Home Learning System (CHLS), and suggests ways that CSCL may enhance this program. / text