The COVID-19 pandemic forced the education sector to transition from traditional classroom settings to online and blended learning formats. MOOCs have emerged as a potential alternative to traditional classroom instruction, providing students with access to high-quality education from leading universities. This case study examines the preferences and views of school students on the integration of MOOCs in the performance tasks of EFL courses. The study was conducted in Türkiye during the 2020-2021 school year, and a total of 110 K-12 students participated. Both qualitative and quantitative data were collected. Statistical analysis was used to analyse the quantitative data, while descriptive and content analysis was used for the qualitative data. The study found that integrating MOOCs in K-12 EFL classes had a positive impact on students' motivation and engagement levels. Using MOOCs as performance tasks increased students' awareness of global issues and improved their research and analytical skills. Additionally, the results showed that MOOCs have the potential to enhance language learning outcomes in K-12 EFL courses. The findings of this study can guide researchers and practitioners in the theoretical and practical aspects of online and blended learning in K-12 education.