Oklahoma High School Stunned to Find 100-Year-Old Chalkboard Lessons

— -- Sherry Read said she was amazed to learn that 100-year-old chalkboard lessons had been found in her classroom, among others, during a renovation of Emerson High School in Oklahoma.

"It's like walking through an art museum," she told ABC News. "You just sit there and stare at every picture."

Read, who teaches math of finance and geometry to juniors and seniors, said the school was built back in 1911, just six years prior to the teachings on the blackboards.

The drawings were uncovered behind all four of the classroom's existing chalkboards on June 2, when construction workers were remodeling the second floor of the school.