This meta-analysis evaluated how well learners' conceptual understanding, environmental attitudes, and pro-environmental behavior were improved by the Socio-Scientific Issues (SSI)-based approach based on the literature (2017-2021). The research analyzed various studies on the efficacy of SSI-based techniques, such as argumentation, case-oriented approaches, and problem-based learning. The findings showed a strong positive influence on learners' understanding of intricate environmental concerns and their propensity for sustainable conduct. While the study found that the SSI-based approach fosters critical thinking and involvement in several noteworthy ways, it also uncovered potential publication biases in certain aspects. Furthermore, the research stressed the necessity of context-specific strategies and interdisciplinary collaboration to improve the robustness and application of SSI-based interventions in climate change education. The results highlight how the SSI-based approach can cultivate proactive, environmentally conscientious, knowledgeable citizens ready to address urgent global concerns.