本研究係對台灣天主教中等學校校長道德領導、學校組織健康與學校效能三個變項進行受訪教職員知覺調查與描述、比較不同背景變項的教職員差異是否顯著、探討校長道德領導、學校組織健康對學校效能相關性及預測性，依據研究所得結論,分別對台灣天主教中等學校董事會、學校當局、教育人員及後續研究者提出建議，以做為推展校長道德領導、精進學校組織健康及提高學校效能之參考。 本研究使用問卷調查法，以t檢訂、單因子變異數分析、皮爾森積差相關、多元迴歸等統計方法，探討台灣天主教中等學校校長道德領導、學校組織健康與學校效能之關係。 經由文獻的蒐集與探討，提出本研究的研究架構模式圖。研究對象為台灣天主教中等學校435位教職員，研究工具係組合陳浩、秦夢群、蔡玲玲三位各自編寫之「校長道德領導」、「學校組織健康」與「學校效能」問卷。 透過統計分析與討論,本研究獲得以下結論: 一、台灣天主教中等學校教職員知覺校長道德領導、學校組織健康與學校效能之現況屬中高程度。 二、台灣天主教中等學校教職員在人員背景變項對校長道德領導、學校組織健康與學校效能的知覺，大部分未達顯著差異。 三、台灣天主教中等學校校長道德領導、學校組織健康與學校效能三者間具有正向關聯性。 四、台灣天主教中等學校校長道德領導與學校組織健康對學校效能均具有正向預測力。 / This study aims to examine the relationship among the principals’ moral leadership, school organization health, and school effectiveness in Taiwan Catholic secondary schools. Through the organization status description, comparison between different teacher background variables, the correlation with the principals’ moral leadership, school organizational health to forecast school effectiveness was discussed. Finally, it proposes suggestions for Taiwan's Catholic secondary school boards, school authorities, educators and subsequent researchers for further improvement of school effectiveness. This study uses questionnaires survey, t test, one-way analysis of variance, Pearson product-moment correlation, multiple regression and other statistical methods to explore Taiwan's Catholic secondary school moral leadership, the organizational health and schools' effectiveness. Through the collection and discussion of the literature, this study proposes the study frmaework. The questionnaire interviewing 435 Taiwan Catholic secondary school faculties, is developed by the results of moral leadership, school organization and school effectiveness relationship of health from the research of Chen, Qin, and Tsai. Through statistical analysis and discussion, this study obtains the following conclusions: 1. Taiwan Catholic secondary school staff has medium-to-high perception of moral leadership, organizational status of school health and school performance. 2. Taiwan Catholic secondary school faculty staff’s background variancees show insignificant differences in surveying the principals’ moral leadership of principals, school organization and school effectiveness of health. 3. Taiwan Catholic secondary school moral leadership, school health and school performance of the organizations have a positive correlation. 4. Taiwan Catholic secondary school moral leadership and school organization health have a positive predictive power for the effectiveness of school.