Some members of the NAACP are protesting outside a suburban Phoenix school after a photo of students spelling out a racial slur with T-shirts showed up on social media.

Since the photo went viral Friday, an online petition has started that calls for the six Desert Vista High School students involved to be expelled and the principal fired.

Tempe Union High School District officials declined Monday to discuss possible punishment for the students.

Officials say they're outraged and saddened by the offensive photo and want to ensure it never happens again at the school.

Desert Vista students were wearing shirts to spell out BEST(asterisk)YOU'VE(asterisk)EVER(asterisk)SEEN(asterisk)CLASS(asterisk)OF(asterisk)2016" for a senior class yearbook photo.

The six girls in the photo went off on their own and used their shirts to spell out the slur.