OGLETHORPE, Georgia (41NBC/WMGT) — The Macon County School System has canceled classes for students Friday after a water main break left parts of Oglethorpe with low water pressure or no water. According to a notice from Superintendent Johnathan B. Roberts Jr. Thursday night, Macon County Elementary School is without water and a boil water advisory has been issued. The district says it needs to allow enough time for the water to be cleared for s…