AU - الشهري، خالد حسن AU - المخلاقي، محمد سرحان AB - The aim of this research is to identify the various forms of administrative leadership among school leaders in the Eastern Province. The research also aims at measuring the efficiency of leadership according to the theories of Heresy and Blanchard. The research sample consists of 130 leaders from different secondary schools in the Eastern Province. LEAD, Leader Effectiveness and Adaptability Description, is applied as a study tool after confirming its validity and reliability. The researchers adopt a descriptive research method for the convenience of the research which has reached a number of results. First, the research has found that the participating leadership followed by the selling (persuasive) leadership are the two most commonly used by the school leaders in the Eastern Province. They are followed by the telling and delegating leaderships respectively, both of which are rarely adopted by school leaders. The study also indicates that the leadership forms of school leaders are not efficient when dealing with low, average, above high and high maturity levels of teachers. Finally, the study implies that the efficiency of leadership forms adopted by school leaders does not meet the required level. (Published abstract) http://search.shamaa.org/abstract_en.gif OP - ص ص. 167-204 T1 - أنماط القيادة لدى مديري المدارس الثانوية في المنطقة الشرقية ومدى فاعليتها وفق نظرية "هرسي وبلانشارد" [مقال] UL - 1 http://search.shamaa.org/fulltext.gif http://search.shamaa.org/PDF/Articles/BAJepsc/49JepscVol20No2Y2019/jepsc_2019-v20-n2_167-204.pdf النص الكامل (PDF)