Background: Motivation is crucial in shaping student success as it drives students to do their best in learning. Objective: This study intended to explore the potential impact of parental involvement and teacher competency on student learning motivation. Method: We employed a quantitative survey research approach to obtain data from 112 Christian senior high school students in Merauke District, Southern Papua Province. Obtained data were subjected to statistical analysis using simple and multiple linear regression analysis by employing Statistical Package for the Social Sciences version 21. Findings: The results of data analysis denote a positive and significant impact of family and school environment on students’ learning motivation, both individually and simultaneously. Implication for Practice and Research: Since students often rely on their parents and teachers for approval and support throughout their formative years, this study underscores the need for consistent encouragement. Parents and teachers should focus on praising students for their efforts and perseverance rather than their innate aptitude. Recognizing students’ ongoing efforts and hard work cultivates their resilience and growth mindset.