SHERMAN, Texas — Sherman High School was placed on "secure" status Wednesday afternoon after the Sherman Independent School District received information by phone of a "possible external threat."

In a notice to parents posted on Facebook at 2:38 p.m., the district explained that all staff and students were to remain inside the building and all doors were locked while classes continued as normal. 

"Out of an abundance of caution, police officers are on scene and have secured the campus," the district's message said.

In an update posted at 3:23 p.m., the district said the "secure" status would remain in effect until normal dismissal.

"At this time, the district has no evidence that the phone threat received earlier today was credible," a second Facebook message stated.


Sherman High School message to parents on February 22, 2023.