Calling it a personnel issue, school officials are refusing to release a copy of the letter to the media or discuss its contents.
"I can't discuss personnel stuff," Columbia County school board Chairwoman Regina Buccafusco said. "I can tell you that there are some (teachers) who are not happy with her."
Buccafusco said she received a copy of the letter on Wednesday. She didn't know when Hamilton received her copy. Also getting a copy of the letter was Superintendent Charles Nagle.
"He wouldn't be at liberty to discuss that," Deputy Superintendent Sandra Carraway said of Nagle and the letter. "It's between teachers and their principal."
Carraway did say that the letter didn't ask for Hamilton's dismissal or for her to be disciplined.
The board likely won't get involved, Buccafusco said.
"We're aware of it, but we're not in an investigative process," she said.
Instead, Buccafusco expects Nagle to step in.
For now, Carraway said the school will deal with the matter internally.
"(Hamilton) will be addressing the matter as she sees appropriate," Carraway said.
Hamilton did not return a phone message Friday.
Reach Donnie Fetter at (706) 868-1222, ext. 115, or email@example.com.