In the current context, media literacy has emerged as an essential skill for the formation of critical and well-informed citizens. This article addresses the importance of integrating this skill into the school curriculum, especially in the teaching of Portuguese. Initially, the challenges faced by educators when dealing with the vast amount of information available and the proliferation of fake news are presented. The lack of criteria for assessing the veracity of information and the influence of social networks make students vulnerable to misinformation, highlighting the urgent need for effective media education. The article then explores various didactic strategies that can be implemented in Portuguese teaching to combat disinformation. These include developing critical thinking, analyzing information sources and encouraging the production of responsible digital content. Practical activities such as news debates, fact-checking and school media projects are suggested to engage students in an active and meaningful way. Finally, the formation of critical learners as a central objective of contemporary education is discussed. Media literacy is presented not only as a complement to traditional Portuguese teaching, but as an integral component that prepares students to face the challenges of the digital age. The article concludes that by enabling students to recognize and question false information, schools play a fundamental role in promoting a more critical and informed society.