By Eric Wearne
The New Teacher Project (TNTP) is a national organization that “works with schools, districts and states to provide excellent teachers to the students who need them most and advance policies and practices that ensure effective teaching in every classroom.”
TNTP recently published a report called “The Irreplaceables
,” which discusses the “real retention crisis in America’s urban schools.”* For the purposes of this report, TNTP defines “Irreplaceables” by looking at the value-added test data provided by four large urban school systems.
Those whose students gained 5-6 more months of learning each year compared to lower-performing teachers were deemed “Irreplaceable” – about 20 percent of the teachers in each of the school systems TNTP examined.