Peter Wright Priest Mason Credit: Montgomery County Police Department

A week after a Col. Zadok Magruder High School teacher was placed on administrative leave for alleged “inappropriate conduct” with a student, police charged him with sexual abuse.

On Nov. 4, Montgomery County Public Schools administration announced that a Magruder staff member was being investigated for having an inappropriate relationship with a student, but released few details “to avoid prejudicing the ongoing investigation.”

On Wednesday evening, Montgomery County police announced that Peter Wright Priest Mason, 42, of New Market, was charged with sexually abusing a female student and fourth-degree sex offense by a person in a position of authority.

Mason has been employed by MCPS since 2011 and previously worked at Northwest High School as a special education paraeducator, according to a news release from police.

Mason was a special education teacher at Magruder, according to a letter sent to families by Principal Leroy Evans.

“These charges are deeply concerning and unacceptable and represent a serious breach of trust, responsibility, integrity and the law,” Evans wrote. “We hold our employees to a high standard of character and these allegations violate that.”

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In his message, Evans wrote that a “support team of school psychologists and counselors” would be available for students beginning Thursday morning.

Case information was not immediately available for Mason on Wednesday evening.

MCPS spokesman Derek Turner said in a text message that Mason remains on administrative leave.

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A video with “explicit content” posted to social media last week alleging to have been filmed at Magruder was not filmed at the school, MCPS spokeswoman Gboyinde Onijala said last week. She said she did not know the origin of the video but that it does not include any MCPS staff or students. The video was turned over to police to investigate, Onijala said.

Caitlynn Peetz can be reached at caitlynn.peetz@bethesdamagazine.com