Sending your child off to preschool is a bittersweet moment in the lives of most parents. If the time has come for your little one to start preschool, you're probably experiencing a jumble of emotions, many of which are in direct conflict with one another. You may be excited, for instance, that your child is reaching a new milestone in his or her life, yet you could be simultaneously sad because this milestone marks the end of those sweet baby years.