When she realizes she can have fun without you, she'll be more willing to let you leave. Many preschools have large classes with rigid time frames and lots of group activities. A child who doesn't have the self-control to sit still and be part of a cohesive group probably wouldn't do well in a preschool setting yet. Look for a sense of patience and an emerging awareness of others' feelings. An attention span of 10 minutes is good for a 3-year old.
Most preschools require their students to be potty trained before enrollment.
If your child isn't ready for school, don't worry. Whether your child attends preschool now, waits another year, or skips the whole thing, these last few years before kindergarten can be a productive, joyful time for you and your child. Experts recommend 1 adult to every 7 or 8 kids. Check staff member's credentials and on-going training . Look at the school's curriculum .