This paper studies the prereading and prewriting skills and everything that is considered under those terms. There are many preconditions needed for developing these skills, such as, cognitive development, good hearing perception, motor skills etc. Except these biologically conditioned factors, there are outside factors that also have an impact on prereading and prewriting skills.Those are social enviroment and its stimulus in which child happens to be. A study has been done to examine the knowledge of these skills of preschool children. The examination took place in the kindergartens „Prečko“ and „ Grigor Vitez“ in Samobor and twenty-seven children participated in it. Twelve of them were students from kindergarten „ Prečko“ and fifteen students from „Grigor Vitez“ kindergarten. The study has been conducted with worksheet that consisted of tasks that determines children's knowledge. The results have shown that hypothesis, that were assumpted before the research, are true. The children that participated in examination were very successful in solving prereading and prewriting skills tasks. Also the assumptions that gender or living place have no impact at all at acquiring prereading and prewriting skills, have proven accurate.