Sirojuddin Abror, Tsediso Robert Makoelle. Evaluating the Effectiveness of Outcome-Based Curriculum Implementation in Improving 21st-Century Skills Among Secondary School Students. JELS [Internet]. 2025 Oct. 20 [cited 2025 Dec. 21];5(2):60-76. Available from: https://jurnal.gerakanedukasi.com/index.php/gerasi/article/view/175