There are many scientific studies that have shown the importance of sleep.  We all know that getting enough sleep helps us function better during the day, but this is especially true for children and their ability to effectively think during the school day.  Throughout my years of teaching, I have noticed that children who come to school tired due to lack of sleep do not perform very well at school.  In my experiences, most of these students tend to underperform their well-rested peers.  Students who are not rested are usually unable to focus attentively during lessons; this may lead to a compromised level of deep understanding of concepts taught, resulting, in some instances, lower test scores.  Parents are strongly encouraged to set bedtime routines to ensure the success of their children as they learn throughout their days at school.