本研究旨在探討竹苗區國民中學教師知覺校長願景領導、學校組織氣氛與學校效能之關係。為達研究目的，首先蒐集相關文獻資料加以探討分析，瞭解校長願景領導、學校組織氣氛與學校效能之內涵，以建立本研究架構之理論基礎，及問卷編製的依據。在實證研究上採調查研究法，以竹苗區公立國民中學教師為樣本對象，採「分層隨機抽樣」方式，進行研究資料的蒐集，共發出600份問卷，有效問卷582份，回收可用率達97.0%。問卷回收後，分別以描述性統計、t考驗、單因子變異數分析、皮爾遜積差相關及逐步多元迴歸等進行統計分析。 綜合文獻探討及調查研究結果，本研究獲致研究結論如下： 一、竹苗區國中教師知覺校長願景領導屬於中高程度，其中以「願景的發展與宣導」層面最佳。 二、竹苗區國中教師知覺學校組織氣氛屬於中高程度，其中以「教師承諾行為」層面最佳。 三、竹苗區國中教師知覺學校效能屬中高程度，其中以「有效的教學品質」層面最佳。 四、在「校長願景領導」方面，不同「學校位置」背景變項之國中教師，知覺校長願景領導有顯著差異。 五、在「學校組織氣氛」方面，不同「性別」、「現任職務」、任職學校「校長性別」及「學校位置」背景變項之教師，知覺學校組織氣氛有顯著差異。 六、在「學校效能」方面，不同「學校規模」及「學校位置」背景變項之教師，知覺學校效能有顯著差異。 七、竹苗區國中校長願景領導與學校組織氣氛具有顯著相關。 八、竹苗區國中校長願景領導與學校效能具有顯著相關。 九、竹苗區國中學校組織氣氛與學校效能具有顯著相關。 十、竹苗區國中校長願景領導與學校組織氣氛對學校效能具有顯著預測作用。 根據以上研究結果，提出具體建議，提供教育行政機關、學校行政及教師未來相關研究之參考。 / The overall objective of this study is to estimate the associations among the principal’s visionary leadership, school organization climate, and school effectiveness in Hsinchu and Miaoli junior high schools. To achieve the research purposes, a literature review was conducted to understand the principal’s visionary leadership, school organization climate and school effectiveness, and then to establish the fundamental theory of this study and develop questionnaires. This is a cross-sectional survey study using stratified random sampling design. The study recruited teachers in Hsinchu and Miaoli areas public junior high schools. A sample of junior high school teachers in Hsinchu and Miaoli areas, stratified random sampling, issued a total of 600 parts, 582 valid questionnaires, the effective rate of 97.0% questionnaires. The collected data was analyzed by descriptive analyses, t-test, one-way ANOVA, Pearson product-moment correlation, and multiple stepwise regression analysis. The main findings of the study include： 1.Moderate-high teacher’s perceptions of the principal’s visionary leadership were shown, and “development and propaganda of the vision” had the highest level. 2.Moderate-high teacher’s perceptions of the school organization climate were shown, and “teacher’s commitment behaviors” had the highest level. 3.Moderate-high teacher’s perceptions of the school effectiveness were shown, and “effective teaching quality” had the highest level. 4.School location showed significant effect on teacher’s perceptions of the principal’s visionary leadership. 5.Teacher’s gender, current position, principal’s gender, and school location showed significant effects on teacher’s perceptions of the school organization climate. 6.School scale and location showed significant effects on teacher’s perceptions of the school effectiveness. 7.Principal’s visionary leadership and school organization climate were positively correlated. 8.Principal’s visionary leadership and school effectiveness were positively correlated. 9.School organization climate and school effectiveness were positively correlated. 10.Principal’s visionary leadership and school organization climate were significant predictors of school effectiveness. According to the above research conclusions, the suggestions are proposed to be used as reference by educational institutions, school administrative units, and teachers in the future.