<p>This study empirically analyzed the development of academic resilience among 33,898 disadvantaged college students based on nationally representative data from the National College Student Study Survey (NCSS), using adjacent-category ordinal logistic regression models. The study found that: first, high-impact practical activities (HIPs) significantly promoted academic resilience, with social practical activities having the most significant effect, followed by research-related activities; second, the marginal effect of HIPs showed a nonlinear incremental law, which elevated the effect to 3.95 times of the initial stage when pushing students to progress from moderate to high resilience; third, the study revealed the effect of disciplinary heterogeneity that Natural science students benefit more from research-related activities, social science students realize sustained benefits through extended learning, and humanities students benefit most from social practices.HIPs are key levers for promoting equity in higher education, and the study reveals the significant role of high-impact practices (HIPs) in promoting academic resilience among disadvantaged undergraduates, providing insights into equity in the large-scale expansion of higher education in the context of collectivist education. Teaching practices and tiered interventions provide important insights.</p>