There are many varied approaches to involving parents in assessment, but a coherent knowledge base is lacking. To gain a deeper understanding of the role of parental involvement in student learning, we accessed journal articles from three databases following the "Preferred Reporting Items for Systematic Reviews and Meta-Analyses" (PRISMA) guidelines. Two hundred and eleven articles were generated, but upon application of exclusion criteria, 25 articles remained for final analysis. We examined the outcomes and approaches for parental involvement in assessment, including the research focus, countries, school context, research design, the terminology used, definition, and challenges. The findings of our review highlight the competing understandings of parental involvement, geographical, theoretical, and practical gaps. We also highlighted significant areas for future investigations.