The Gow School called actions of five former faculty and staff members "inexcusable and inappropriate" but found no patterns of conduct or systemic failures, according to a report the school released Friday.
The school launched its investigation after a former student contacted the school in February 2019, alleging improper sexual conduct by a faculty member more than 25 years ago.
The school sent a letter to all alumni last June, asking them to contact the school with reports of any inappropriate behavior.
The Wales school, a college-prep boarding and day school that specializes in educating students with dyslexia and other learning disabilities, posted the report on its website Friday.
Ten former students, plus a spouse and a parent of former students, contacted the school over the next eight months, according to the report.
The investigation and report, compiled by attorney Julia Hilliker, details allegations against four faculty members and a nurse that are alleged to have occurred more than 20 years ago.
The allegations included "student bullying; inappropriate, but nonsexual, verbal exchanges with teachers; and inappropriate or forced sexual interactions," according to the report.
Three former faculty members and one former staff member are accused of student abuse, and one former faculty member was convicted of a child pornography charge after he left the school.
Two of the faculty members are named in Child Victims Act lawsuits filed against the school.
“It is important to note that the alleged incidents discussed here were not contemporaneously reported by students, faculty or parents to school administrators, with one exception. None of the allegations included misconduct on the part of the administration or a systemic failure to deal with difficult situations," according to the report.
The school will accept additional reports from alumni, said Headmaster M. Bradley Rogers Jr. and John Bullock, chairman of the board of trustees, in a letter to alumni.
"We would be remiss if we did not also say we want to put these findings behind us. The events recounted in the report, with none occurring in the last 15-20 years, are a chapter of Gow’s history that we needed to define and must now discuss," they wrote.