N.C Teacher Calls Student a Loser on Her Paper

A middle school teacher from Enka Middle School in Candler, North Carolina is gaining national attention for calling a student "loser" on a test paper.  It's happened several times and has been addressed, but now one parent thinks he has taken it way too far. 
On one test paper the teacher wrote "-20% for being a Loser" and underlined "loser" twice.  He claims that he uses terminology like that to relate to the students, but most parents agree that this is just a form or bullying the student.