It is regarded as considerable values those principles’ skills of managing diversities and teachers’ cultural intelligences which mean they understand and appreciate other cultures. These core values are remarkably vital to be culturally literate in the global world. The organizations and their administrators respecting the diversities of the employees can allocate more time competing their counterparts in the world instead of losing energy with unnecessary conflicts. The aim of the study is to examine the correlation between teachers’ cultural intelligence and Principal’s managing the diversities and their transformational leaderships according to the teachers’ point of views. The research has adopted a correlational model. The data of the research was gathered from 428 primary school teachers in Turkey/Malatya during 2020-2021 academic year. The Data was gathered through the “Cultural Intelligence”, “Diversity Management” and “Transformational Leadership” scales. The data was analyzed by arithmetic mean, correlation analysis and regression analysis. The results of the research suggest that the primary school teacher’s cultural intelligence, the principal’s management of diversity and their transformational leadership levels were “mostly high”. It was revealed that there was a moderate level positive significant correlation between teachers’ cultural intelligence levels and Principal’s skills of managing the diversities and their transformational leaderships. Moreover, teacher’s cultural intelligence levels and Principal’s skills of managing the diversities predict the transformational leaderships of Principles. Consequently, to increase the transformational leadership of Principals, it is recommended to enhance teachers’ socio-cultural awareness and to work on improving the skills of diversity management of principals.

The study aims to analyze the relationship between teacher leadership and the organizational happiness of secondary school teachers. The research was designed in the relational survey model. The research sample group involves 358 teachers working in the state schools in the Bakirkoy district of Istanbul province. The Teacher Leadership Scale and the Organizational Happiness Scale were used to collect the data. The social sciences statistics program was used in the analysis of the data. It was found that teachers' teacher leadership and organizational happiness levels were high. There was a low level of positive significant relationship between teacher leadership and organizational happiness. and between the positive emotions sub-dimension of organizational happiness and the total score of teacher leadership. However, there was no relationship between the negative emotions sub-dimension of organizational happiness and teacher leadership. It was concluded that teacher leadership significantly positively affects teachers' organizational happiness.