Using the Descriptive –correlation research design, this study aimed to assess the students’ perception on Self-Learning Module in determining the English proficiency of Grade 8 students of Adelina I National High School. Random sampling was used in this study to identify the number of Grade 8 respondents. Mean and standard deviation as well as Pearson’s r correlation were used to treat the data. Findings revealed that the extent of students’ perception on the use of self-learning module in determining their reading, speaking, and writing skills were all high. Moreover, the level of students’ English Proficiency in reading gain satisfactory while very satisfactory performance was observed in writing and speaking skill. Also, the age, number of siblings, and educational attainment has no direct relationship to the students’ perception on self- learning module in determining their English proficiency. While the gender and time spent in studying has a low to moderate relationship to the self -learning module in determining their English proficiency in terms of reading skill, speaking skill, and writing skill. Results further revealed that there is a significant relationship on the students’ perception on self -learning module in determining the English proficiency of Grade 8 public junior high school students at 0.05 level of significance.