This case study investigates the impact of the 4 August 2020 Beirut Port explosion on Lebanon’s education sector, focusing on the professional and ethical challenges that emerged in the aftermath of the disaster. Occurring amid a severe economic collapse and the COVID-19 pandemic, the explosion severely disrupted educational institutions across schools, universities, NGOs, and related professional sectors, intensifying pre-existing structural vulnerabilities. Using a mixed-methods design combining a survey of 120 participants and 15 semi-structured interviews, the study examines issues of equity, academic integrity, institutional responsibility, and professional duty of care during crisis conditions. Quantitative findings indicate a high level of individual ethical commitment among educators and administrators, contrasted with significantly weaker institutional ethical support mechanisms. Qualitative findings further reveal complex ethical dilemmas related to resource allocation, assessment standards, emotional labor, psychological strain, and governance failures. Participants reported tensions between maintaining academic standards and demonstrating compassion toward affected students and staff. The study concludes with policy-oriented recommendations aimed at strengthening ethical crisis management frameworks, improving institutional accountability, and enhancing long-term organizational resilience across the Lebanese education sector. By documenting lived experiences within a compounded crisis context, this research contributes to broader discussions on disaster ethics, educational leadership, and professional responsibility in fragile and conflict-affected settings.