The Government Accountability Office says that there are "significant quality issues" with the U.S. Department of Education's data on restraint and seclusion in schools. (Thinkstock)

Investigators with the nonpartisan Government Accountability Office (GAO) found that the U.S. Education Department’s data on restraint and seclusion in the 2015–2016 school year was marred by quality control processes that are “largely ineffective or do not exist.” The GAO concluded that the data is so flawed it is impossible to tell if restraint and seclusion are being used in excessive or discriminatory fashion.