Melinda Smith, from Florida, US, claimed the teacher had written “basically what the f***’ is this” on his high school assignment.
It’s not clear exactly how old her child is but in the US high school kids are aged between 14 and 18.
A picture of the report shows “WTF is this? Absolutely no credit” scrawled on top of the homework in red ink.
The assignment was to “write a small report” about a current event in science or technology.
“WTF is this? Absolutely no credit”
The unnamed Rutherford High School teacher was clearly was unimpressed with her student’s efforts — which would have contributed to 30% of the final grade.
But mum Melinda thinks the teacher went too far and ought to be “reprimanded”.
She said: “It wasn’t anything about not getting the credit, it was more so the language about what the writing to students, that was very inappropriate and not acceptable for a teacher whatsoever.”
“I think for sure she needs to be reprimanded, I believe that something should be placed in her file,” she added.
The incident provoked mixed reactions on social media, with some siding with Melinda while others claimed she had overreacted.
One Twitter user suggested the acronym may stand for “Worse Than Failure”.
Principal Coy Pilson said the school had taken action, adding that “mistakes” can happen.
“Once we were notified, I notified district officials and our HR has been involved and they’re currently investigating the situation,” he said.
He added: “She was apologetic and it was a mistake on her part.
“All of the teachers at Rutherford High School are caring, loving teachers and we’re also human and so, we make mistakes, but we understand that we are called to a high professional standard and when we make mistakes we try to correct those mistakes and move forward.”