The study aims to improve critical thinking skills of high school students in the Xth grade by applying the Problem Based Learning (PBL) model based on Educational For Sustainable Development (ESD). The type of research used is quasi-experimental design, with the form of research design used is nonequivalent control group design. The subjects of the study included the pupils of MBI Amanatul Ummah Pacet, with two classes namely (X-6 and X-8), where X-6 as the control class of 30 pupils as well as X-8 as the experimental class of 32 pupils selected using saturated sampling techniques. Data was obtained through lifts and tests. The results of pre-test and post-test values were obtained in the experimental class that applied the ESD-based PBL model with a higher post-test result than the Pre-test result with a curved N-gain score of 0.84 in the “high” category and the control class obtaining a 0.50 N- gain score with the “sedang” category, as well as reinforced by the calculation of Cohen’s effect size in the experimental class with a score of 0,816 which showed a major influence on learning with the PBL-based ESD model. The hypothesis test with the Independent Sample t-test obtains a Sig. value of 0.08 > 0.05. Students in the experimental class received an average percentage of 86.82% in the "very good" category. Based on these results, it was concluded that there was an increase or significant influence on the use of ESD-based PBL models on critical thinking skills on climate change material.