The aim of this research is to study the relationship between primary school teachers' level of participation in decision making, school culture and their level of readiness for change. The data in the study were collected from 597 primary school teachers (304 men and 293 women) in central districts of Mersin in 2014 spring semester. Participation in School Management Scale was used to measure teachers' level of participation in decision making, School Culture Scale to measure the dominant school culture and Readiness for Change Scale to measure teachers' level of readiness for change. According to the analysis results, there is a significant relationship between primary school teachers' level of participation in decision making, school culture and their level of readiness for change. It was seen generally that teachers' level of readiness for change is high enough, but their views about school culture and participation in decision making are of medium level.