“…Human leadership refers to the extent to which the principal is supportive and fosters participation: structural leadership refers to the extent to which the principal thinks clearly and logically, develops clear goals and policies, and holds people accountable for results; political leadership refers to the extent to which the principal is persuasive and effective at building alliances and support and solving conflicts; symbolic leadership refers to the extent to which the principal is inspirational and charismatic; and educational leadership refers to the extent to which the principal emphasizes and encourages professional development and teaching improvement. In the past, using different conceptions, researchers had identified different typologies of school environments and had provided interesting implications for research and practice in school management and improvement (Brown, 1965;Cheng, 1991;Halpin and Croft, 1963;Hoy and Clover, 1986;Kenny and Rentz, 1970;Likert and Likert, 1978; Thomas and Slater, 1972). But there seem to be no past studies that use a comprehensive conception of school environment including the five basic aspects-the instructional, structural, human, cultural and political-to classify the school environments into a typology.…”