The purpose of this research is to determine the relationship between the attitudes of parents and school maturity of girls and boys aged between 48-72 months who attend private preschool education institutions. The study group of the research consists of a total of 339 people, 113 children attending private preschool education institutions in Bursa province, 113 mothers and 113 fathers. In the study, Parental Attitude Scale (PAS), which was developed by Karabulut Demir and Sendil and whose validity and reliability analyzes were performed, was used to determine mother and father attitudes. In addition, the Metropolitan School Readiness Test developed by Hildert et al. and adapted into Turkish by Oktay was used to determine the school readiness levels of children. As a result of the study, it is seen that most of the mothers and fathers adopt a democratic attitude. In the analysis of the relationship with maturity, there was a statistically significant difference between the total maturity status in terms of overprotective mother scores (p<0.05). The overprotective attitude score of the mothers of children with high total maturity level is significantly lower than the overprotective attitude scores of the mothers of children whose total maturity level is above-medium, medium and below-average. There is no statistically significant difference between the total maturity status in terms of other scores (p>0.05).