Objective: This study aimed to examine the role of quality of life and religious orientation in predicting the happiness of female students.
Methods: This research employed a descriptive–correlational design. The study sample consisted of 250 female high school students selected through simple random sampling from three schools in District 4 of Mashhad during the 2025–2026 academic year. Participants completed the Oxford Happiness Questionnaire, the World Health Organization Quality of Life Questionnaire (WHOQOL), and the Allport and Ross Religious Orientation Questionnaire. Data were analyzed using SPSS software through descriptive statistics and regression analysis.
Results: The findings indicated that quality of life and religious orientation significantly predicted students’ happiness (p < 0.01), with quality of life demonstrating a stronger predictive effect. The physical, psychological, social, and environmental dimensions of quality of life played a significant role in the experience of happiness. Additionally, religious orientation contributed to happiness by providing meaning, a value framework, and social support.
Conclusions: The results suggest that students’ happiness is influenced by the interaction of psychological, social, and spiritual resources. Therefore, educational and developmental programs that simultaneously address quality of life and religious orientation may help promote sustainable happiness among students.