The study examined the differences in teachers’ effectiveness based on principals’ instructional supervision in public secondary schools in Uyo Local Education Committee in Akwa Ibom State. Four objectives and their corresponding research questions and hypotheses were formulated to guide the study. The ex-post facto design was used in carrying out this study. Two hundred and one teachers and 14 principals were drawn from the population of 1,105 teachers and 14 principals respectively to participate in the study. Two researchers-developed instruments, “Principals’ Instructional Supervision Interview (PIS1)” and “Teachers’ Teaching Effectiveness Questionnaire (TTEQ)” were used to gather data. Data collected were analyzed using the mean and independent t-test statistics was used. The findings were that there is a significant difference in teachers’ effectiveness based on classroom observation, analysis/strategy, post-conference analysis and post-analysis conference. Teachers in schools where instructional supervision was adequate were more effective than those that had inadequate instructional supervision. It is, therefore, recommended among others that, the principals should carry out an adequate instructional supervision of teachers so as to enhance their teaching effectiveness.
Keywords: Effectiveness, Instruction, Principals, Supervision, Teachers
