Former High School Teacher Sentenced to 4 Years in Prison for Relationship with Student

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ryan yamamoto

Yamamoto’s mugshot from his September 2012 arrest.


A former Whitney High School teacher convicted of having an inappropriate relationship with a 17-year-old student has been sentenced to four years and eight months in prison, the Placer County Assistant District Attorney Jeff Wilson announced Thursday.

Matthew Scott Yamamoto was arrested back in September 2012. He pleaded guilty to four felony counts back in October, and pleaded no contest to charges of oral copulation with a minor, attempted sexual intercourse with a minor and sexual penetration with a foreign object on a minor. Yamamoto also pleaded guilty to a charge of conspiracy to obstruct justice.

In deciding the sentence, Placer County Superior Court Judge Michael Jones noted that Yamamoto took advantage of his position as a teacher and robbed the girl of her high school years.

Further, Jones said he sentenced the former teacher to prison instead of probation time due to Yamamoto’s repeated violations of restraining orders throughout the course of the case. Jones called out how Yamamoto apparently tried teach the teen how to destroy evidence to hide their relationship.

Yamamoto must also register as a sex offender for the rest of his life.

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