The teacher was also found to have written messages of a sexual nature to the 13-year-old, who was reportedly one of his students, on her Facebook page.
However, despite the discovery, the local authorities chose to let the man stay on at work for two weeks before suspending him, while the girl remained absent from classes.
According to the charges, the man had been in contact with his young student via Facebook and through text messages sent to her mobile phone.
He allegedly posted messages with sexually descriptive content while urging her to do the same.
The teacher also described his own sexual fantasies and the desires he had about the girl.
When the police searched the teacher's computer during the investigation, they found 33 downloaded child pornography films, totally more than 6 hours of footage.
The man continues to deny both the child pornography and harassment allegations.