The effectiveness of public administration is increasingly evaluated through its ability to respond efficiently, transparently, and lawfully to appeals submitted by individuals and legal entities. An effective appeal-handling mechanism strengthens administrative accountability, promotes public trust, reinforces the rule of law, and enhances the legitimacy of governmental institutions. Contemporary administrative reforms emphasize citizen-oriented governance, participatory decision-making, and digital transformation, requiring legal systems to develop comprehensive mechanisms capable of evaluating and classifying institutional performance in handling administrative appeals. Despite considerable progress in public governance reforms, significant challenges remain regarding the establishment of standardized legal criteria for measuring effectiveness, ensuring procedural consistency, integrating technological innovations, and balancing administrative discretion with legal accountability. This research develops a comprehensive legal framework for assessing and classifying the effectiveness of public administration in managing appeals from individuals and legal entities. The study adopts a qualitative research and review methodology through systematic analysis of legislative instruments of the Republic of Uzbekistan, governance theories, administrative law literature, and public management scholarship. The research synthesizes theoretical foundations from governance, communicative action, adaptive governance, balanced performance measurement, and citizen participation to formulate a multidimensional evaluation model. Findings demonstrate that effective assessment requires integration of legal compliance, institutional responsiveness, procedural transparency, citizen satisfaction, organizational adaptability, and digital governance indicators. The proposed classification framework contributes to legal scholarship by establishing measurable standards capable of guiding administrative reforms while strengthening institutional accountability and improving public service delivery.