Due to the widespread impact of the COVID-19 pandemic, the Philippines has demonstrated innovation by finding ways to adapt and ensure continued education through the involvement of parents in shaping their children's learning experiences. The main objective of the study is to determine the relationship of parental involvement and academic performance of the Grade 12 students in Mariano Peralta National High School. A sample size of two hundred sixteen (216) respondents was from Grade 12 Senior High School Academic Track Students (ABM, HUMMS, STEM, GAS) of Mariano Peralta National High School. The researchers obtained the list of enrolees of students in the school year 2021-2022 and the sample size is computed using Slovene formula. The data was carefully encrypted and verified to obtain a specific outcome. The findings indicated that there was no significant correlation between parental involvement and student performance. The researchers recommend further expanding the scope of the study by including larger samples from both Junior High School and Senior High School levels. This broader range of participants may yield different results and contribute to the existing knowledge on the relationship between parental involvement and student performance.