WASHINGTON (AP) — Former D.C. schools chancellor Michelle Rhee says she welcomes a probe by the District’s Inspector General into erasures on standardized tests during her tenure.

USA Today reported last week that some high-scoring schools touted by Rhee had extraordinarily high numbers of erasures correcting wrong answers.

Rhee said Monday in an appearance on WAMU-FM that the school system had an outside investigator look into the erasure rates in 2009. She says education officials “saw no data to indicate there was widespread cheating.”

But she says the new probe is needed in order to ease suspicion and confirm that the gains in test scores were real.

She also says one explanation for the erasures could be that children are taught to review their answers carefully.