The purpose of this research is to investigate the mother tongue development levels of pre-school children within the context of various language skill categories. Within the framework of the research, the children’s potentials in terms of their verbal presentation skills, their self-confidence developed toward their mother tongue and their communication competences were evaluated. The study used the Turkish version of the HAVAS 5 linguistic level diagnostic tool that is originally employed to form the basis of individually customized language support programs. 41 (N= 37; 29 boys, 12 girls) pre-school children registered in the kindergarten of a school located in the Muratpaşa district of Antalya and selected using the random sampling method were included in the research.