The study aimed to support the resolution of problems experienced due to preschool children not adjusting to school at the start of first schooling. Thus, problems leading to school rejection and many other probable issues will be prevented. The experimental study about orientation problems occurring in students newly starting preschool used a semi-experimental method with implementations to ensure school adjustment. The study included 53 students with ages between 60-72 months with frequent school absenteeism due to a variety of reasons. Parents of selected students were given information and the general lines of the Designed Adjustment Program (DAP) were explained. The study applied to the students who could not adapt to the school and have experienced school refusal included a preparation phase for a maximum of 1 week. Afterwards, it covers a minimum of 8 and a maximum of 12 days of application. Accordingly, all students in the experimental group to whom DAP implemented adjusted to school, while 66.7% of students in the placebo group and 61.5% of students in the control group were identified to adjust to school. In conclusion, it was identified that the parental training about duties falling to parents during school adjustment provided positive results, individual studies actively including parents, school and teachers were more effective, peer acceptance was important for adjustment to school, there was a need to use social skill acquirements, and girls were more successful at adjustment to school compared to boys.