A video of a gun in school — and the hunt for that weapon — has teachers hitting the alarm.

The Southbridge Education Association is alleging “monumental failures” by the district leadership in handling the report of a student who had a firearm on the middle/high school campus in March.

“To date, there has not been a full accounting of the events that led to an arrest and left our students and school staff exposed to a serious threat for several hours,” the union wrote. “There also has been no effort to assess how to better handle situations that threaten the lives of our students and staff.”

The incident in question took place on March 13 when a student posted a video in a Southbridge Middle/High School bathroom with a gun, according to the union’s account.

Superintendent Jeffrey Villar — who was appointed by the state to oversee the district after it went into receivership — and school administrators were notified of the video by concerned parents.

From there, the union said, the officials did not call a lockdown, shelter-in-place, or pass restrictions and called in the student to be searched. Due to the handling, the union alleges, the student was able to pass off the gun and have another student drive it off campus.

During the search, staff were also sent to find the second student allegedly in possession of the gun without being told the teen may be armed, the union said, putting them in “unconscionable risk.”

The union said that administrators failed to provide a “full and accurate version of the events” to families and claimed there was no credible threat — likely referring to a message sent to parents on the day after 4 p.m. which notifies parents of the video and reads, “Working with close collaboration with the Southbridge Police Department, we were able to determine that there was no threat to the school.”

According to the district and police, the student was arrested and disciplinary action was taken.

In a joint response to the union, Villar and Police Chief Shane Woodson expressed a commitment to keeping kids safe and pushed against the union’s messaging, sharing communications sent to parents after the incident.

“Much of the information that the Southbridge Education Association has shared is inaccurate,” the response reads. “We continue to look into the allegations raised on March 13 and will continue communicating information as we learn it.”

The Massachusetts Teachers Association issued a statement in support of the union, echoing their claims the incident highlights how receivership is a “policy failure” and arguing Villar is “unfit to lead the district.”

The SEA said they are “demanding” the creation of safety protocols and that Villar and the high school principal be “held accountable.”

“Without such actions, nobody can or should feel completely safe attending or working in Southbridge Public Schools,” the union said.