The rapid development of digital technology is reshaping the conservation and dissemination modes of cultural heritage. As an important practical form of digital curation, virtual museums demonstrate great potential in breaking through space-time constraints and improving cultural accessibility. In addition, virtual museums have increasingly become an important non-formal learning environment, offering unique educational opportunities for diverse learner groups. This paper focuses on three core dimensions of virtual museum exhibitions: accessibility, inclusivity and audience engagement. Through systematically sorting out relevant theories and practical cases, combined with quantitative data analysis and qualitative research methods, this paper discusses how digital curation can promote equal access to and diversified participation in cultural heritage. It also explores the educational implications of virtual museums, including their role in fostering critical thinking, cultural literacy, and lifelong learning. The study finds that although virtual museums have achieved remarkable results in expanding cultural coverage, there are still many challenges in accessible design, adaptation for special groups, and the construction of in-depth participation mechanisms. To this end, this paper proposes a digital curation framework based on universal design principles, emphasizes the integration of technological empowerment and humanistic care, and provides theoretical reference and practical paths for improving the social value and cultural influence of virtual museums. The educational potential of virtual museums can be fully realized only when accessibility, inclusivity, and engagement are systematically integrated into curation design. The research data is mainly sourced from international academic studies, industry reports and statistics from authoritative institutions during 2021-2025, which ensures the scientificity and timeliness of the conclusions.