This study aims to determine the opinions of preschool teachers on preschool adaptation during the Covid-19 pandemic process and to determine what can be done to facilitate the adaptation of children to school in such negative situations. The research was carried out as a multiple case study with 22 preschool teachers working at private and governmental institutions in seven different regions of Turkey. The data were collected by means of phone conversations using an interview form prepared by the researchers. The results of the research determined that children's adaptation was affected by masks and social distance requirements, necessitating teachers to prepare their activities accordingly. Teachers' opinions about the effect of gradual transition on the adaptation process to the school were found to differ. The findings and results of the research are detailed in the study.