This case study explores the effectiveness of project-based learning (PBL) in promoting critical thinking skills among students. By analyzing various PBL implementations across different educational settings, the study aims to determine the impact of PBL on students' ability to analyze, evaluate, and create new knowledge. Data were collected through surveys, interviews, and performance assessments from a diverse group of students engaged in PBL activities. The findings indicate that PBL significantly enhances critical thinking skills, fostering a deeper understanding of subject matter and better preparing students for real-world problem-solving. The study also identifies key factors that contribute to the success of PBL, such as the role of the instructor, the structure of the projects, and the integration of reflective practices. These insights can inform educators and policymakers on best practices for implementing PBL to maximize its benefits in promoting critical thinking.