Three former athletic coaches and a former college counselor at the Branson School in Ross were accused of sexual misconduct involving former students from the late 1970s to the early 2010s in a 17-page report released late Friday.

According to the report, the staffers at the elite private school engaged in sexual activities ranging from inappropriate touching, kissing and hand-holding to oral sex and rape with female students aged 15 through 18 whom they “groomed” or otherwise befriended while coaching them in sports or advising them in college test preparation.

The report is the result of a 10-month probe commissioned by the school last June and done by investigators Nancy Kestenbaum and Clara Shin of Covington and Burling LLP. It includes information from more than 100 interviews and more than 2,000 documents, according to a statement released by Branson Head of School Christina Mazzola and Board of Trustees Chair Claudia Lewis.

Named in the report were:

Rusty Taylor, Branson director of athletics and soccer coach in the late 1970s.

Les Carroll, Branson director of athletics and soccer and basketball coach in the mid-to-late 1980s.

Rich Manoogian, Branson volunteer basketball manager and assistant coach in the late 1980s and early 1990s.

Alistair Grant, college counselor in the early 2010s.

Branson said investigators “did not receive any information about adult sexual misconduct toward current Branson students or reports that any current Branson employee engaged in sexual misconduct with any students.”

Mazzola and Lewis said that even though “the report contains sensitive and graphic material and is painful to read,” it was important to release it publicly in order to uncover past instances of sexual abuse, provide support to survivors and “to make certain that we have the proper policies and procedures in place to ensure that similar incidents do not occur in the future.”

Ross police Chief Erik Masterson said Monday that even though he had been in contact with school officials at the start of the probe and had taken several reports of alleged sexual misconduct at Branson in the 1980s and in 2014, there was new information in the report that he had not seen before. He said he has put in a request to meet with the Marin County District Attorney’s Office “to talk about the report and see if anything in there is prosecutable — especially the more recent incidents.”

Rosemary Slote, chief deputy district attorney, said her office “would be open to sitting down and reviewing the report with Chief Masterson.”

Masterson said he had approached the DA’s office in 2014 about a complaint made by a former student who alleged sexual abuse in the 1980s, but was told the statute of limitations had expired. Also in 2014, Masterson said he referred another complaint made by the school to the San Francisco Police Department because it involved alleged incidents that took place in San Francisco and in Scotland — the current home and former family home, respectively, of Alistair Grant.

Grant, who declined comment Monday when reached at his private office, High Ground Education, took groups of Branson students to Scotland for college testing preparation exercises, such as essay writing. The trips were not sponsored by Branson.

“I hope you understand, I can’t comment,” Grant said when asked about the allegations. According to the Covington report, he has issued a written denial of all accusations, calling them “false.”

“I never committed any inappropriate conduct with any students at Branson or anywhere else,” his statement in the report says in part.

San Francisco police did not immediately respond to a request for a status report on the 2014 referral from Masterson.

Taylor, who did not respond to phone messages left Monday on both his home and cellphones, worked at Branson from 1972 to 1979, when he was in his late-20s to mid-30s.

Four Branson graduates told investigators that Taylor engaged in sexual misconduct with them when they were students, according to the report. A fifth graduate said she had sexual contact with him in her first year of college. According to the Covington report, Taylor declined through his attorney to speak with investigators.

Three former Branson students went to Mazzola in May 2018 with the allegations against Taylor — and actually triggered the launch of the probe in June 2018. Complaints about the other three men came in to the investigators during the course of the probe.

One student, who played on the soccer team when Taylor was her coach, reported that Taylor had “cornered” her at school and kissed her when she was 15, and then continued to kiss and touch her on her breasts and buttocks during her junior year. In December of that year, he invited her to his home, where, despite her protests, he allegedly “raped” her. Several days later, Taylor allegedly forced her to perform oral sex. Another student soccer player also reported forcible kissing and touching from Taylor — and she said she quit the soccer team to avoid his advances.

A third student who also said Taylor forced her to perform oral sex reported the instances in 2018 to the Marin County District Attorney’s Office, who referred her to Sausalito Police Department — where Taylor lives — to file a complaint.

The report also lists three other students who said they suffered similar instances of sexual misconduct, including rape and sexual intercourse, at Taylor’s home.

The investigators said they “could not find evidence concerning the circumstances of Taylor’s departure from Branson” and that some of the administrators and faculty from that time have since died. Investigators said, however, that among the graduates they interviewed, that it was “understood” that Taylor was sexually involved with students.

From 1979 to 2005, and again in 2015, Taylor was a soccer coach and assistant athletic director at San Francisco University High School, according to a statement posted over the weekend by Head of School Julia Russell Eels.

“Taylor was disciplined in the early ‘90s following complaints that he had engaged in harassing conduct toward two SFUHS students,” Eels says in a statement on the school website. “We are not aware of any complaints about Taylor’s conduct since he was disciplined in the early ’90s.”

Taylor was inducted into the San Francisco Prep Hall of Fame in 2016, when he was head coach of the San Francisco Nighthawks, a women’s soccer league in the city.

Carroll, who was at Branson from about 1985 to 1989, reportedly had a dating and sexual relationship with a Branson student, and they lived together for about eight months after she graduated. The school fired Carroll because of the relationship, according to investigators.

Carroll went on to serve as men’s soccer coach at Napa Valley College for 16 years from 1990 to December 2016. He could not be reached for comment, and the college declined to provide any contact information. Investigators said in the report that Carroll was not a U.S. citizen when he worked at Branson, but it was not clear if the school helped him later, as a negotiating point in his termination, to achieve permanent residency status.

Manoogian, who did not respond to a phone message Monday, was reported as “kissing, heavy making out and touching” and having “oral sex” with a student starting when she was 15. The student, who graduated in the 1990s, said the instances continued through her junior and senior years.

The student reported Manoogian’s conduct to Branson officials, after which he allegedly left obscene phone calls on her answering machine. The student later told investigators she filed a report with the Ross Police Department, but investigators said those documents “would have been purged pursuant to its document retention policy.”

Grant was a college counselor at Branson from May 2011 to June 2013, and remained affiliated with Branson until December 2013, according to the report. He was in his 30s at the time.

Two Branson graduates contacted investigators to report “sexual and emotional” misconduct by Grant. One of the students said she had sexual intercourse and oral sex with Grant “a number of times” and recorded some of her feelings in a journal, which she supplied to investigators. The student was one of those who went with Grant to Scotland, where Grant was to teach the group how to write college essays.

Another student said she joined Grant’s college counseling group in her junior year, when she was 16. She told investigators they formed a relationship, and that Grant encouraged her to spend time with him for her senior project — instead of taking on an internship. That student also kept a journal, in one entry, telling her cousin, “And I let someone abuse me for, like, a year and a half.” Her cousin apparently replied, “Nobody lets someone abuse them. You can say that you were abused but you cannot say that you let someone abuse you.”

The school has set up a crisis line to offer counseling for any alumni survivors who need help at 855-794-0545. Branson has also instituted a half-dozen new actions and policies, including a curriculum on consent in 10th grade, a revised protocol for reporting sexual abuse and a new regulation that all campus visitors must provide identification and clear two national databases for sex offenders.