Board evaluation is essential to sustainable corporate governance because it ensures that boards remain effective, accountable, and responsive to changing institutional and stakeholder demands. Many governance failures do not occur suddenly but develop over time when boards become passive, fail to question management or lose clarity in their oversight role. Board evaluation comes in handy to provide a structured way to assess how well boards perform their duties, clarify the boundary between governance and management and identify areas for improvement. By promoting reflection, accountability, and continuous improvement, board evaluation strengthens decision-making, builds stakeholder trust and supports the long-term stability and resilience of institutions.