A.G. Linda Kelly said the suspect is 31-year-old Jonathan Bell of Colleen Court in Wyomissing, Pa.
Bell is a swimming coach for Governor Mifflin High School and a teacher in the Exeter School District, Kelly said.
According to the criminal complaint, Bell had sex with a student from December 2011 to June 2012, starting when she was 17 years old.
The charges state that Bell allegedly solicited the girl for nude photographs, performed a sexually graphic act for her on video and had at least one sexual encounter with her on school property.
Bell is charged with two counts of unlawful contact with a minor, one count of corruption of minors and one count of criminal solicitation.
Bell was arrested on Tuesday and ordered to be held on $200,000 bail.
Kelly emphasized that this remains an active and ongoing investigation. Anyone with additional information is encouraged to contact Chief County Detective Michael Gombar of Berks County District Attorney's Office at 610-478-7171.