Aims: To investigate the best fit model of student reading motivation. Study Design: Descriptive-causal.  Place and Duration of Study: Department of Education (DepEd) Divisions of Cotabato, Koronadal, Kidapawan, Sultan Kudarat, and General Santos City during the school year 2022-2023. Methodology: Data were gathered through survey questionnaires. The 400 grade 10 respondents were chosen through stratified random sampling. A structural equation model wa used in accessing the sequence of inter-dependencies between independent and dependent variables. Results: The overall results showed a high level of student learning strategies, engagement, and reading motivation. It was also revealed that the variable of the attitude of students towards school showed a moderate level of reluctance and a low level of loneliness at school and belongingness of the participants. There is a significant relationship between the three variables: learning strategies, engagement, and attitude toward school in reading motivation. All variables have a significant correlation.  Of the five models developed, model 5 had indices that were consistent and indicated the best fit to the data. Conclusion: The study proves the Achievement Goal Theory. Students’ motivation helps them develop a desire to learn and succeed.  It goes that motivation is essential in reading. Likewise, high-level ability in learning strategy, engagement, attitude towards school, and reading motivation contribute to the motivation of students in reading.