The purpose of this project is to examine how educationalists work with children’s language development in a Reggie Emilia- and in one Montessori preschool. I am going to compare these two educational philosophies and search for differences and similarities in how they approach language development. The background of the study is the key role that language development plays when preparing children for later studies in comprehensive school. Information has been gathered both through present specialist literature as well as through interviews with educationalists from the different educational philosophies.  I have also made direct observations of some of the different activities performed by the educationalists. It was harder than I thought to get answers for the questions at issue because language developement in preschool is an extensive field of study and there is much to examine. The analysis and result has been carried out and presented according to language expert Veli Tuomelas principles in language. The study shows that there are some differences but that the preschools mainly operate in similar ways.