A Florida mom is understandably upset after seeing what a teacher commented on her child's homework.

A teacher wrote "WTF is this?" on a student's assignment, as opposed to an old-fashioned "F."

The student's mother, Melinda Smith said, "Just seeing 'WTF' what is this? You know, basically is this there's no credit. It wasn't anything about not getting the credit, it was more so the language...That was very inappropriate and not acceptable for a teacher whatsoever," according to WIVB.