MEHLVILLE, MO -- A class assignment landed a Missouri teacher on administrative leave and has the NAACP calling for a formal apology. It happened at an elementary school in Mehlville, Missouri.

Superintendent of the school district called it "unacceptable." A Missouri teacher was placed on paid administrative leave after asking students to put a price on slaves for a school social studies ...

The Mehlville School District said the teacher has since been placed on paid administrative leave Rachel DeSantis is a senior writer on the music team at PEOPLE. She has been working at PEOPLE since ...