The English learning environment, both online and offline, can be improved through the implementation of effective pedagogical approaches. In response to secondary education needs, it is critical to establish comparable curriculum paradigms that address the knowledge acquisition gap and psychometric variation. This study aims to promote student engagement and self-efficacy in English education by implementing a problem-based learning (PBL) approach integrated with social constructivism (SC). A t-test and a correlation test were used in a single-group quasi-experiment with 45 participants. The results of paired samples t-tests show a significant difference in engagement (M = 4.78, SD = 2.95, p = .001, p < .05) and self-efficacy (M = 6.49, SD = 16.59, p = .01). Admittedly, both cognitive engagement and social engagement enhance grammatical and textual competence efficacy dramatically, leading to a spectacular improvement. After controlling for the pre-test, a correlation between engagement and efficacy remains significant (r (43) = -0.40, p = .01). In conclusion, the combination of PBL with SC education has demonstrated remarkable effectiveness in facilitating English language learning, meeting the needs of secondary education teenagers, whether in a physical classroom or engaging through online platforms.