SAN JOSE, Calif. (KGO) -- Almost three years after the first reports of past sexual abuse, the leadership of a Catholic girls school in San Jose admit that for years staff didn't protect students.
Presentation High School today released the results of a months-long investigation.
RELATED: More sexual misconduct claims at San Jose's Presentation High School
"The stark truth is that our school did not live up to its commitment to protect you. We added further harm when we responded defensively when reports of past abuse began to surface in 2017."
That's the main message of a letter Thursday from Presentation High School's president and board of directors chair.
Since September of last year, an investigative firm has been looking into allegations of sexual abuse and misconduct by former Presentation staff members.
RELATED: Accusations fly over SJ high school's handling of sexual abuse allegations
The letter says investigators have "good faith belief" that six former staff members engaged in inappropriate behavior with students.
The allegations span from the 1980s to 2013.
They include acts ranging from "grooming" students to groping.
RELATED: 2 former students allege sexual abuse at Presentation High School in San Jose
None of the staff members still work at Presentation.
Investigators also found instances in which two former principals, Mary Miller and Marian Stuckey, received reports of possible sexual misconduct but took ineffective or no action.
The school has implemented several reforms, and have stripped the school of any honors to the staff involved.
RELATED: Presentation High takes steps to protect students from sexual misconduct
None of the accused individuals has been charged.
The school has shared the report with the San Jose Police Department and the San Jose Diocese.
Report details years of alleged sex abuse at Presentation High, president apologizes
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