Gender-based violence (GBV) prevention programmes are essential in educational settings to promote a safe learning environment for all students, including teachers of both genders. The study employed a mixed-method approach involving surveys and focus group discussions to gather data from 150 male and 150 female teachers across 20 randomly selected schools. Quantitative analysis was conducted using SPSS version 26, with confidence intervals for statistical significance considered. A notable theme emerged regarding the efficacy of peer mentoring programmes in reducing GBV incidents among teachers; these interventions showed a significant reduction in reported conflicts (p ≤ 0.05) compared to pre-intervention levels. The findings suggest that comprehensive GBV prevention programmes can significantly improve conflict resolution and mental health outcomes for both male and female teachers, contributing positively to the school environment. School administrators should prioritise the implementation of multi-faceted GBV prevention strategies, including peer mentoring programmes, as a means of fostering safer educational environments. Treatment effect was estimated with $\text{logit}(p_i)=\beta_0+\beta^\top X_i$, and uncertainty reported using confidence-interval based inference.