This article evaluates curriculum programs based on constructivist learning theory, with a focus on developing critical thinking in students. Constructivist theory, as a major learning theory, emphasizes the importance of active and collaborative learning. Accordingly, curricula designed based on this theory can effectively enhance critical thinking skills. This study employs a descriptive analysis method to examine existing literature and studies. The results indicate that constructivist curricula not only facilitate deeper learning but also improve students' abilities to analyze issues and make logical decisions. Additionally, challenges and barriers in implementing these programs, including resistance from teachers and students to shift from traditional to constructivist approaches, are discussed. Finally, recommendations for improving the quality of curricula and strengthening critical thinking skills in educational systems are provided.