This study aimed to identify the degree of practicing distributed leadership in Post Basic Education Schools and its relation to teachers' academic optimism from their point of view in the Interior Governorate of the Sultanate Oman. The study sample consisted of (265) male and female teachers who were randomly selected. There were two questionnaires used in this study to collect the data for the descriptive approach; the first is to measure the degree of practice of distributed leadership, and the second is to measure the level of academic optimism among teachers. Furthermore, the study's out comes are as follows: - The degree of practice of the principals of the post-primary schools in Oman's internal governorate to the distributed leadership from the teacher's point of view was within the degree of high practice. The mean ranged between 4.18 to 4.03 and a standard deviation between (752) to (661). - The level of academic optimism in the study sample of the post-primary education teachers in the internal governorate in terms of the academic optimism measures was at the high level where the mean ranged between (6.34) and (3.44) and the standard deviation between (.634) and (.641). There is Positive correlation and statistical significance at the level of significance (0.012a) among all distributed leadership fields and areas of academic optimism. - There were statistical significant differences at the level of (0.052a), This is according to the gender variable in all axes of the study tool and for females (1-9), and there were no statistical significant differences at the level of significance (0.052a) of the scientific qualification variable in all axes of the study instrument. - There were statistical significant differences at the level of significance (0.052a) for the level of academic optimism in the study sample according to the gender variable and for the females, according to the experience in teaching in all the study axes, except the collective efficiency axis, and the absence of significant statistical differences at the level of significance (0.052a) depending on the variable of scientific qualification in all axes, except the axis of confidence of faculty members, parents and students, as well as in the grand total, there were statistical significant differences in favor of the bachelor's campaign. Based on these findings, the researcher made several recommendations.