"In the wake of years of testimony about horrific treatment of DC teachers, SBOE last year commissioned a study by DC schools expert Mary Levy, which showed terrible attrition of teachers at our publicly funded schools, dwarfing attrition rates nationally. The update shows that while DCPS teacher and principal attrition rates have dropped slightly recently, they remain very high, with 70% of teachers leaving entirely by the 5-year mark .Perhaps the most stunning data point is that more than half of DCPS teachers leaving after 6 years are highly rated .This suggests that the exodus of teachers from DC’s publicly funded schools is not merely a matter of weeding out poor performers (as DCPS’s response after p. 70 of this report suggests). Rather, it gives data credence to the terrifying possibility that good teachers are being relentlessly harassed until they give up and leave."