Government double standard on religion: Georgia High School Mural posts “God is Dead” quote

Would that school assign books that wrote about positive religious experiences?  Say the Bible for example.  Hardly.  But for some other "approved" literary works it is OK.  Isn't the Bible considered a literary work?  Would the school count the Bible as helping students understand the US or world history?  You would think that it was a very important book in understanding what motivated people such as America's founders.  But I assume that the answer is "no" to that also.  At this point it really isn't a question of whether one is religious or not, but one of consistency.  From Fox News:

A Georgia high school project that has sparked outrage among some students and parents will not be taken down, the district decided.
Alcovy High School leaders will instead meet with students to explain the context behind a poster featuring the quote, “God is Dead” from Arthur Miller’s play “The Crucible.”
“It made my daughter very uncomfortable,” Crystal Mitchell, a student's parent told MyFoxAtlanta.com.
“If my child can’t pray in school and they’ve taken religion out of school, for this to be plastered on the walls of school, is a huge concern for me,” Mitchell said.
But the school contested that thousands of students read the book each year, and the project is meant as a reflection of the play, not as a religious statement. . . .