Abstract
The current study investigates how high school students' perceived teacher support relates to their academic engagement, drawing on Job Demands-Resources (JD-R) and Conservation of Resources (COR) Theories. It further examined academic self-efficacy's mediating role and the moderating role of proactive personality. The study used Perceived Teacher Support Behavioral Questionnaire, Academic Self-Efficacy Scale, Proactive Personality Scale, and Academic Engagement Scale to survey 1664 students at a public high school in a county-level city in southeastern Henan Province, China. Findings showed that (1) perceived teacher support positively influenced students' academic engagement; (2) academic self-efficacy partially mediated this connection; (3) proactive personality moderated the indirect effect, specifically the path from academic self-efficacy to academic engagement. In conclusion, academic self-efficacy acts as a key factor through which perceived teacher support promotes students' academic engagement. Proactive personality further strengthens the effect of academic self-efficacy on engagement.