00551nam a22001217a 4500020002000000082001700020100003400037245004900071260003400120300003400154500002100188650022000209  a0205306012 (hb)  a371.203bBEA  aBeach, Don M.aJudy Reinhartz  aSupervisory leadershipbfocus on instruction  aBostonbAllyn and Baconc2000  axi, 324 p.b: ill. c; 23 cm.  aIncludes index.   aSchool supervision-United StatesvAssumptions related to supervisionvOrganizational culturevLeaders and managersvSupervisory leadership stylesvCritical componentvCreate barriersvDevelopmental supervisionvIIMC