Happy and successful societies are possible through training of healthy, happy and successful individuals. Responsibility of raising healthy happy and successful individuals belongs to parents as well as teachers. The purpose of this research is to determine the factors that differentiate happiness of teachers who work at primary, secondary and high school levels and to present the necessary suggestions for raising happier individuals. In addition, due to lack of research focused on happiness of teachers, the aim is also to contribute to the literature. Sample space consists of 448 teachers, who are teaching in elementary, middle school and high school levels, working in 36 different schools. The happiness scores of the teachers were generally higher than average and it is concluded that the teachers' happiness scores did not differ significantly according to age, marital status, number of children, seniority and income levels. However, there is a significant difference in happiness scores of teachers who are willing to go to school and teachers who are unwilling to go to school.