This study aims to determine the effect of the fundamentals of campus journalism a resource learning material for student journalists using quasi- experimental research design emphasizing one- group approach. The developed learning resource material was evaluated by thirty (30) experts such as the School Paper Advisers (SPA), Coaches and Trainers, and Master Teachers for content of the material, structural design, organization and presentation and timeliness of information with all the criterial deemed as highly acceptable. Thus, the writing competencies are also assessed as to accuracy of information, brevity and clarity of information, style of writing, and fairness and balance in writing which noted as highly appropriate. It was tested in the fifty (50) student journalists from Los Baños National High School Batong Malaki (LBNHS-BM) using the prewriting and post writing activities. Using the mean, standard deviation, ANOVA, and T-test as the primary statistical tools, it revealed that student journalists significantly increased their journalistic writing competencies using the developed learning material on campus and descended from the developing level to the proficient level. This indicated that the material is effective and can enhance the writing competencies of the student journalists. It is strongly recommended that the developed learning material be used in school training by the school paper advisers, coaches and trainers, and student journalists. Also, another type of content in campus journalism may be made, such as photojournalism, copyreading, headline writing, and cartooning, which are all part of developing writing competencies and an essential part of campus publication. Further research may be made for the improvement and betterment of this study.