The beginning of the school year it an exciting time for some and stressful for others.  Even though students experienced full day kindergarten, it still can be very exhausting!  Sometimes this may mean a change in their mood or the typical choices they make.   Setting an earlier bedtime or giving them an opportunity to rest might be beneficial until they adjust to the change.  I have heard from others and witnessed first hand with my own child how tiring a full school day can be.