Starting preschool is a significant milestone for children, often accompanied by anxiety and uncertainty due to unfamiliar routines. Katrina Green, an early childhood teacher, notes that children feel anxious because they have no idea what to expect in this new environment. To help ease the transition, Alisa Clark Ackerman suggests preparing children weeks in advance rather than treating the first day like any ordinary event. This preparation can help alleviate separation anxiety and make the experience smoother for both children and parents.