Predominantly, a school provides pedagogical support to its students, though perceptions about the school’s internal environment can incessantly influence a student’s aggregated learning experience. The present study aims to investigate the impact of the campus environment on students’ study engagement and the roles of self-concept clarity and intentional self-regulation on this association. A hypothetical model about the relationship between campus perception, self-concept clarity, intentional self-regulation, and study engagement was tested. A total of 1597 students from Gansu Province, China, selected through a convenience sampling technique, were surveyed utilizing self-rated scales. Data were collected utilizing the Study Engagement Scale, Perceptions of School Climate Scale, Intentional Self-Regulation Scale and Self-Concept Clarity Scale. Results showed lower to moderate positive correlations between study variables. Students’ campus environment perceptions positively predicted adolescents’ study engagement. This association was also mediated by self-concept clarity and intentional self-regulation. All of these factors explained 41.26% variability of the study engagement. These findings show how the learning environment can impact students. Specifically, these results help demonstrate that self-concept clarity and intentional self-regulation have academic importance to optimize students’ study engagement that in turn promotes quality learning.