School Faculty SHOCKED After They Found What Was Hidden Behind The Chalkboards [SEE PHOTOS] When Emerson High School in Oklahoma started a construction project on one of their classrooms, they had no idea that they were about to uncover a piece of history that had been hidden since 1917. Behind the chalkboards in the classroom was a story of lessons past, a preserved moment in time in a faraway classroom that was really just a wall away. When the current boards were stripped, the contractors discovered a second set of boards that had not been touched in 100 years. Watch the video below and tell us what you think of this discovery. 