This is all sorta amusing:
"A Nashville middle school teacher who equated calling something "gay" with the use of the N word has been suspended for three days without pay. Stephen Henry, a sixth-grade teacher at Creswell Arts Magnet School, overheard a student describe something as "gay." Henry approached the girl who is reportedly African American and asked her how she would feel if he were to use the N word.
The girl later complained to her parents.... The student's mother said she believed Henry was not intending to insult the girl but middle school students are too young for such a discussion.
Henry has said he intends to appeal the suspension. In addition to teaching he was recently elected vice president of the Metro Nashville Education Association. He also is vice president of the Tennessee LGBT Equality Project.
Source
Young people do routinely use "gay" to mean "stupid" (I wonder why?) so I guess that the teacher did not like that but NOTHING justifies white people using the dreaded "N-word" in America today, it seems.