Lyon school hours are 8:55 a..m. to 3:30 p.m. If you are dropping off your child after 8:50 a.m., please accompany them into school office.  Sign your child in and inform the health coordinator of your arrival.  Late arrival is anytime after 8:55 AM or 1:00 PM for the afternoon kindergarten.  Please do not drop your child off in the front of the building.