The intensive use of social media has transformed the processes of accessing, consuming, and circulating information, positioning adolescents as one of the groups most exposed to digital misinformation. Despite their high connectivity, numerous studies show limitations in their ability to critically evaluate the content they consume and share in digital environments. In this context, this article aims to analyze, through a systematic review of the scientific literature, the role of educational institutions in the media literacy of adolescents in the face of the impact of misinformation on social media. The research was conducted following the PRISMA 2020 guidelines, and the protocol was registered in PROSPERO. An exhaustive search was conducted in the Scopus, Web of Science, and PubMed databases, considering studies published between 2019 and 2025 in English and Spanish. Following the selection process, 46 studies were included in the qualitative synthesis and 18 in the meta-analysis. Methodological quality was assessed using the PEDro and AMSTAR 2 scales. The results show that educational interventions in media literacy generate significant improvements in adolescents’ ability to identify misinformation and reduce their intention to share misleading content, especially those based on skimming, source verification, and cognitive inoculation. It is concluded that media literacy, integrated in a cross-cutting and sustained manner into the school curriculum, is a key strategy for mitigating the impact of misinformation and strengthening critical thinking in adolescents.
Castillo et al. (Tue,) studied this question.