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SAN DIEGO, Calif. — A California high school teacher who carried on a six-month sexual relationship with one of her male students pleaded guilty Friday to unlawful sexual intercourse with a minor and oral copulation with a minor.

According to KSWB, Toni Nicole Sutton, 38, faces up to three years in prison when she is sentenced July 25. She will also be required to register as a sex offender, Deputy District Attorney Judy Taschner said.

The prosecutor said the consensual relationship started last summer when the boy was 15. Sex acts took place in the defendant’s car, her home and in the classroom.

The boy’s parents saw text messages between their son and Sutton and called the police.

Defense attorney Kerry Armstrong said Sutton had been a teacher for 11 years, starting in West Virginia.

Armstrong said Sutton has been in San Diego for six years and has a child and a boyfriend who has two children of his own.