In the Philippines and around the globe, the call for educational reforms and advancement stresses the need for a scientifically literate population ready for the challenges of working in the twenty-first century. Accordingly, this study aims to investigate the effect of the community–based learning activity packet in enhancing the three domains of knowledge of scientific literacy among grade 9 students of Palahanan Integrated National High School. Based on the results of the study, it was found that there is a significant difference between the pretest and post-test scores in the scientific literacy test of the respondents exposed to the community–based learning activity packet in terms of the three domains of knowledge of scientific literacy. Thus, it is concluded that this hypothesis is not supported by evidence. With this, the following recommendations are recommended: (1) teachers may enhance the community–based learning activity packet by providing more contextualized locale conditions, (2) teachers may also consider incorporating additional reflection and group work activities specifically designed for the improvement of the epistemic knowledge of the students, (3) teachers may also consider the use community – based learning to other areas of scientific literacy like scientific competencies and attitudes, and (4) future researchers may try to use community – based learning in elementary or senior high school in nurturing students interests in science. The development of scientific literacy among students is important, as it holds immense significance not only within the bounds of academic endeavor but also in the real world.