A school bus driver who crashed Wednesday near Whitwell, Tenn., had only one unconfirmed complaint against him, school officials said Friday.

Reports that the driver “slumped over the wheel” just before the wreck are not upheld by audio from the bus’s video camera, either, officials said.

Ray Cartwright, 70, has driven the route near Whitwell for 10 years and was a bus driver “when I was in school,” schools Director Mark Griffith said Friday.

Mr. Cartwright’s bus crashed with 15 Whitwell Elementary School students on board. He and one girl were flown to Chattanooga for treatment, and a handful of children were taken to local hospitals, officials said.

Officials said Mr. Cartwright and the children are recovering at home.

Mr. Griffith said he knew of only one verbal complaint involving Mr. Cartwright hitting a mailbox, and that couldn’t be verified. He was not aware of any other accidents, he said.

Mr. Cartwright “had a DOT (Department of Transportation) physical in January, and that’s good for a year,” Mr. Griffith said. “He attended the highway patrol’s bus driver training October 21 of this year.”

Mr. Griffith said he saw the video from the bus but couldn’t see what happened in the crash. He said Mr. Cartwright can be heard on the audio track talking to a student up to the moment of the wreck.

The Tennessee Highway Patrol has the recording now, he said.

“We’re going to let THP handle that end of it,” he said.

THP officials said Friday that investigating trooper Clyde Reeves has not yet filed a report on the accident.

Trooper Alan Bailey, of THP’s Pupil Transportation Division, said Mr. Cartwright has the proper driver’s license endorsements and was among the drivers who completed training in October. The bus also passed inspection on Sept. 25, Trooper Bailey said.