Kettering schools music teacher arrested; police say child porn found on phone

Authorities say investigation began Nov. 19 when former student, now an adult, cited inappropriate touching years ago, plus current messages from teacher

Credit: Jim Noelker

A Kettering City Schools teacher has been arrested on felony charges involving pornography and juveniles.

Matthew Ryan Koehler, 37, was arrested Wednesday afternoon on two counts of illegal use of a minor in nudity-oriented material, and one charge each of pandering obscenity involving a minor and pandering sexually oriented material involving a minor, said Kettering police Chief Chip Protsman.

He was booked into the Kettering jail shortly after 1 p.m., records show.

Koehler, a music teacher who has helped direct the school district’s several choirs, has been on paid leave since Nov. 20, Kettering Superintendent Mindy McCarty-Stewart said. He has been with the school district since 2012.

Matthew Ryan Koehler. Photo courtesy Miami Valley Jails.

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Koehler hasn’t had contact with students or been allowed on district premises since he was placed on leave, McCarty-Stewart said.

Officials called it an “ongoing investigation” and Protsman said police “encourage anybody who believes that they have been a victim or knows of any inappropriate behavior” to contact them.

“We know there may be victims out there who are minors,” he said. “We want to make sure we act to protect all of them.”

It was not clear Wednesday whether Koehler had an attorney, and Koehler could not be reached for contact.

The district’s Nov. 20 action involving Koehler was taken a day after a former Kettering student reported he was “inappropriately touched” by the teacher while he was a middle school student and Koehler “still had contact with him after graduating,” Protsman said.

Kettering Schools superintendent Mindy McCarty-Stewart and Kettering police chief Chip Protsman walk out of a press conference Wednesday, Dec. 6, 2023, after announcing the arrest of a Kettering teacher on pandering obscenity, pandering sexually oriented material involving a minor and illegal use of a minor in nudity-oriented material. JIM NOELKER/STAFF

Credit: JIM NOELKER

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Credit: JIM NOELKER

The former student, who is now an adult, contacted the school district about receiving inappropriate messages from a teacher, Protsman said.

“As an educator this is very disheartening,” McCarty-Stewart said. “We hire our teachers to care for and protect the well-being and safety of all of our students. We take this matter very seriously. The well-being of our students is our top priority.”

The district encouraged the former student to contact police and file a report. The person filed a report through the police department and officers opened an investigation.

During the investigation, officers found pornographic material involving minors on Koelher’s phone, the chief said. Koehler is being held in the Kettering jail and is expected to be transferred to Montgomery County, Protsman said.

Investigators are asking any other victims or anyone with additional information on Koehler to call Detective Kevin McGuire at 937-296-2597.

A photo of Matthew Koehler from the 2019 Kettering Fairmont High School yearbook.

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