Allegations of sexual misconduct In 2017, allegations of sexual misconduct by teachers were posted to Facebook. In response, the school commissioned an independent investigation, which announced in 2019 that it had identified nineteen former St. Anne's teachers or staff who potentially engaged in inappropriate behavior or sexual misconduct with students, going back to the 1970s.
Suicide of Ellis Lariviere In February 2021 an eighth grade St. Ann's student, Ellis Lariviere, committed suicide after being notified that he would not be permitted to continue at the school following the end of the year. Lariviere was noted as a talented artist who struggled with
dyslexia. His midyear eighth grade reports noted his problems with writing and organization, but also noted the progress he had made that year, and praised him for creative thinking and contributions to his classes. Lariviere's suicide note specifically requested that the school not hold an assembly about his death, and the school's notification to parents failed to mention that he had been told not to return to the school. Two years later, in April 2023, Lariviere's parents filed suit against the school, its headmaster, and its board of trustees for
wrongful death. A commentating law professor, David C. Bloomfield, stated that despite how private schools are not required to retain students, the school did make an ethical commitment not to give up on students.
Hiring of Winston Nguyen In July 2024, St. Ann's math teacher Winston Nguyen was arrested and charged with "use of a child in a sexual performance, promoting a sexual performance by a child and disseminating indecent material to a minor", among other charges. It was revealed that Nguyen had previously been convicted of grand larceny, stealing more than $300,000 from an elderly couple he worked for, and that St. Ann's had been aware of his criminal past when they hired him. Nguyen pleaded guilty to the charges relating to the July 2024 arrest in March 2025 and was sentenced to seven years in prison on March 19. ==Faculty and alumni==