© The Author(s) 2015. Published by Science and Education Publishing. Table Model Summary Model R R Square Adjusted R Square Std. Error of the Estimate 1 .908a .825 .45768 a. Predictors: (Constant), ILP ANOVAa Sum of Squares df Mean Square F Sig. Regression 526.764 2514.699 .000b Residual 111.859 534 .209 Total 638.623 535 a. Dependent Variable: JE b. Predictors: (Constant), ILP Coefficientsa Unstandardized Coefficients Standardized Coefficients t B Std. Error Beta (Constant) 2.013 .042 47.909 .000 ILP .028 .001 .908 50.147 Sabah Hejres et al. Investigating the Effectiveness of Leadership Styles on Instructional Leadership and Teachers Job Expectancy in Kingdom of Bahrain. American Journal of Educational Research, 2017, Vol. 5, No. 7, 694-709. doi:10.12691/education-5-7-2 © The Author(s) 2015. Published by Science and Education Publishing.