The aim of this study is to increase knowledge about, and describe how, participants consider their own learning process and development during in-service education, and to consider how they attempt to implement their new knowledge in pre-school after completing the training programme. The sample consists of nine newly qualified pre-school teachers who participated in interviews twice. The first interview was conducted directly after completing their studies, and the second interview was conducted one year later, when the pre-school teachers once again were active in pre-schools. The findings indicate that pre-school teachers perceive that they have gained strength in their profession. The theoretical bases including developmental pedagogy and a changed view of the child have been crucial for the implementation process. This kind of in-service education is significant in increasing pre-school quality.