A former private school teacher in Volusia County has pleaded guilty to child pornography charges.

Matthew Graziotti, who taught at Warner Christian Academy in South Daytona, had originally pleaded not guilty after his arrest in July, but changed his plea Thursday morning in federal court.

Graziotti, 34, was also a summer camp coordinator at the academy.

According to investigators, Graziotti molested several children between ages 6 and 12 at his Edgewater home, and even one on a bus while the child was sleeping.

Graziotti allegedly took pictures of the acts and then posted them on a file-sharing service.

Sentencing for Graziotti for his child porn conviction is scheduled for January.