This research was focused on the different social media platforms and its influence on the writing proficiency level of senior high school students. It also aimed to determine and provide facts about the proficiency level of Filipino students hence it will help teachers think of a better strategy to enhance students writing skill. The research involved two hundred and twenty-two student ? respondents obtained from the two secondary public schools in Pakil, Laguna: Kabulusan Intergrated National High School and Pakil Senior High School. Mean and Standard Deviation were used to determine the mostly used social media platform by the students. A researcher ? made questionnaires were used as the main instrument to obtain the necessary data. Questionnaires were divided into two (2) parts: first, a survey questionnaire and second, an essay writing activity. Mean, Standard Deviation, Frequency and Percentage were used to determine the writing proficiency level of the students. While Spearman Correlation was used to identify the significant influence of social media platforms on the writing proficiency level of senior high school students. The results of the study revealed that the mostly used social media platforms was Youtube with the greatest number of users with the highest mean of 2.68 or standard deviation of 1.05 and was High among learners. Meanwhile, Google Classroom had the least number of students ? users with the lowest mean of 2.57 or standard deviation of 1.03 and was High among learners. Also, in terms of the writing proficiency level of the students, it resulted that expressive writing had a remark of Very Good with a mean of 3.40. Meanwhile, creative writing had a mean of 3.27, expository writing had a mean of 3.31, persuasive writing had a mean of 2.86 and technical writing had a mean of 2.61, all were remarked as Average. As per the significant influence of social media platforms on the writing proficiency level, the following results were obtained: correlations were all significant among Creative writing and Instagram (r=0.872, p=0.000), Messenger (r=0.846, p=0.000) and Zoom (r=0.886, p=0.000), Expository writing and Google Classroom (r=0.584, p=0.011) and Twitter (r=0.428, p=0.015), Expressive writing and Google Classroom (r=0.243, p=0.026), Messenger (r=0.332, p=0.019), Twitter (r=0.294, p=0.022) and Youtube (r=0.298, p=0.022), Persuasive writing and Facebook (r=0.398, p=0.016), and Google Classroom (r=0.448, p=0.014), and Technical writing and Facebook (r=0.245, p=0026).