Below is the first day of school schedule:
Tuesday, September 3: First day of school for grades 1-9, this includes grade 9 orientation (grades 10-12 does not attend)
Wednesday, September 4: First day of school for grades 10-12
Thursday, September 5: First day for Kindergarten
Friday, September 6: First day for Pre-K
Here is the link to the printable school calendar: https://www.msad51.org/apps/pages/printable_calendars