CONCORD – St. Paul's School said 13 former faculty and staff members engaged in sexual misconduct.

The school made the report public Monday after a yearlong investigation that followed the announcement that former teacher Howard White, who taught at St. Paul's from 1967-71 had been terminated from St. George's School in 1974 after admitting sexual misconduct.

The school reviewed allegations against 34 faculty and staff members.

The school substantiated 13 of those allegations, and said they had other reports of sexual misconduct by 10 former faculty and staff and unsubstantiated allegations by 11 current and former faculty and staff. Those claims were shared anonymously and could not be substantiated, the report states.

The investigation was performed by Casner & Edwards law firm in Boston and led by Former Massachusetts Attorney General Scott Harshbarger.

“We offer our most sincere apology to survivors for the wrongs that were done to them at St. Paul’s School,” said Rector Michael G. Hirschfeld in a letter to the St. Paul's community that he co-signed with Board of Trustees President Archibald Cox Jr. “The failures uncovered in this report have hurt every member of our School community, none more so than the survivors of these abuses. It is with deep gratitude that we recognize the candor and courage of the survivors and witnesses who shared their experiences with Mr. Harshbarger and his team.”

NH1 News will have more on this developing story throughout Monday.