Two juniors at a performing arts school in Las Vegas wore Ku Klux Klan costumes during a history class presentation.
According to the Las Vegas Sun, school officials received complaints after a photograph of one of the students -- wearing the KKK's traditional robe and hood outside of class -- hit social media.
School principal Scott Walker apologized in a letter to parents, calling the January 9 incident "offensive."
According to the Sun, district officials "reminded" the teacher that it was school policy to consult the principal before any "potentially controversial lessons." Though police investigated the incident, neither the teacher nor the students received any formal punishment.
Las Vegas Academy also drew attention in 2011 when the school's production of "Big River," based on Mark Twain's "Adventures of Huckleberry Finn," featured use of the N-word.