This study aimed to evaluate the effectiveness of institutional performance in public secondary schools in Al-Ahsa, Saudi Arabia from the perspective of school administrators. The researcher conducted a questionnaire with 90 school principals to determine the level of effectiveness and identify any differences based on administrator qualifications and experience. The findings showed no significant differences in institutional performance related to qualifications or experience. The researcher concluded that effective school administration requires strategic planning, organization, evaluation, and development. Providing feedback systems and maintaining a positive school culture can measure institutional effectiveness. This study provides implications for improving administrator training programs and developing intervention strategies to address weaknesses in school performance.