Rebecca Diebolt. Photo via Placentia Police Department
Rebecca Diebolt. Photo via Placentia Police Department

A former Valencia High School teacher is awaiting sentencing after pleading guilty to engaging in sex acts with a female student at the school in Placentia.

Rebecca Eileen Diebolt of Brea pleaded guilty Friday to oral copulation of a person younger than 16 and sexual penetration by a foreign object of an underage victim. Her sentencing was set for May 20.

At the time of the abuse, Diebolt was a language arts teacher and a swimming and water polo coach at the school, where she began working in 2003, according to prosecutors.

According to police and prosecutors, Diebolt engaged in sex acts with the victim on multiple occasions between 2004 and 2008.

The encounters occurred in Diebolt’s classroom and at her home both after school and on weekends.

The acts continued after the girl graduated and began attending college, authorities said.

— City News Service & staff reports

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