Last Day of School (Sullivan County Schools) Post author By Thomas Gould Post date May 26, 2022 When 05/26/2022 All Day Add To Calendar Download ICS Google Calendar iCalendar Office 365 Outlook Live Event Type School Cal Online bookings are not available for this event. Back to Annual Calendar ← 2022 Fall Break (Hawkins / Sullivan County Schools) → First Day of School 2022 – 2023 (Hawkins / Sullivan County Schools)