An Arrowhead Elementary School teacher has been charged with rape and gross sexual imposition after he allegedly sexually assaulted two students in his classroom.

An Arrowhead Elementary School teacher has been charged with rape and gross sexual imposition after he allegedly sexually assaulted two students in his classroom.

A criminal complaint filed against Matthew D. Rausenberg, 39, of East Maynard Avenue in Columbus alleges he groped an 8-year-old student while the girl was sitting on his lap. The complaint, filed Tuesday, March 17, in Delaware Municipal Court, states Rausenberg filmed the alleged incident on his cellphone.

The complaint also alleges Rausenberg, in a separate incident, sexually assaulted a 10-year-old girl who was sitting on his lap and reading a children's book.

The Olentangy Local School District's website lists Rausenberg as a third-grade teacher at the school, located on Hollenback Road in Berlin Township.

Delaware County Municipal Court Judge Marianne Hemmeter set Rausenberg's bond at $1 million at his arraignment March 17, according to court records. He is next scheduled to appear in court Thursday, March 26, for a preliminary hearing.

The sheriff's office declined to comment on when the alleged incidents occurred, and the criminal complaint does not include dates for the incidents but does state they occurred during school hours.

Delaware County Sheriff Russell Martin contacted district Superintendent Wade Lucas on Monday afternoon, March 16, to let him know Rausenberg was a suspect in a criminal investigation. Rausenberg immediately was removed from the school by district employees, according to a news release from the sheriff's office.

Sheriff's office spokeswoman Tracy Whited said Rausenberg was taken into custody later that day, while investigators served search warrants at his classroom and home.

Rausenberg was arrested about midnight and booked into the Delaware County jail, where he remained Tuesday afternoon.

Whited said the office launched an investigation into Rausenberg on March 10, following a referral from Delaware County Children Services.

Whited said the sheriff's office is working to determine if there are any additional victims in the case. She said further charges are possible.

The news release from the sheriff's office stated Olentangy schools made counselors available to students following Rausenberg's arrest.

District officials did not immediately return calls seeking comment. The district did issue a letter to parents explaining the situation, noting that Rausenberg had been placed on unpaid administrative leave and relieved of all teaching responsibilities.

"We are deeply concerned about this incident and these allegations," the letter stated. "Our focus is on the students and ensuring they receive appropriate support."

Parents were invited to call Arrowhead Principal Luke Carlisle at the school at 740-657-4650 with any questions, and urged to leave a message if Carlisle is not immediately available.

Anyone with information on the case has been asked to call the Delaware County Sheriff's Office detective bureau at 740-833-2837.