Like most good ideas, Whetstone was hatched over lunch. In a humid New Orleans cafeteria in 2010, two school leaders were commiserating about their messy teacher coaching processes. There were binders full of forms, out of control spreadsheets, and multi-year email chains with action steps and accolades. The data was all over the place and reporting was a nightmare. That night, they wrote the original code that is the backbone of Whetstone’s Teacher Observation platform. Today, Whetstone helps more than 300 schools manage both weekly teacher coaching and annual teacher evaluation.