(NECN: Josh Brogadir, Westwood, Mass.) - The teacher resigned in 2009.
The student graduated later that year.
Westwood Public Schools officials plan to fight this lawsuit vigorously.
They claim it is filled with lies and that a sexual relationship did not happen at school.
"While John was seated in his wheelchair in the Spanish teacher's room at Westwood High School, Ms. Ashworth forcefully performed oral sex on him," said plaintiff's attorney Carmen Durso.
Damning, disturbing details, unleashed by Durso on behalf of his client, known only as John Doe, a former student at Westwood High School.
He alleges the sex act was performed on him by former teacher, Jamie Ashworth back in 2009 and that she got him hooked on drugs.
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The district says it didn't happen.
"I'm here to tell you first and foremost, that accusation is completely and categorically untrue," superintendent John Antonucci said.
"There were issues around contact, excessive contact with a student, not sexual. And also other students. And she was warned," said Leonard Kesten who is representing the district in the case.
Ashworth resigned from her position as Spanish teacher at Westwood High School in February 2009.
Soon after she went to Newton South.
Now John Doe is suing Westwood Schools, former principal Emily Parks, who is the current assistant superintendent, and Ashworth who still works in education but not in public schools according to her attorney - claiming they did nothing to stop this, despite knowing about it.
"The allegation is simply wrong. There's nothing about her that suggests that she is a harm or a threat to any students or children. She's had an impeccable record, quite frankly," said attorney Douglas Louison, who is representing Ashworth.
We went to Ashworth's Needham house, but a woman there declined to comment.
Back in May 2011, John Doe was arrested at that home for trying to steal Ashworth's painkillers, charges that were later dropped.
She allegedly admitted to police that they had been in a physical relationship, that had ended one year before.
John Doe, now 23, is out of state in a drug treatment program.
The district maintains that he was already 18 years old when anything might have happened and that none of it did while he was a student.
They also argue, the three year statute of limitations has expired.
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