(a) To increase student understanding of, and familiarity with, American historical documents, public schools may display historically important excerpts from, or copies of, those documents in school classrooms and common areas as appropriate. Local boards of education and charter schools are strongly encouraged to allow and may encourage any public school teacher or administrator to read or post in a public school building, classroom, or event excerpts or portions of writings, documents, records, or images that reflect the history of the United States, including, but not limited to:

(1) The Preamble to the Georgia Constitution;

(2) The Declaration of Independence;

(3) The United States Constitution, with emphasis on the 13th, 14th, and 15th Amendments;

(4) The Bill of Rights;

(5) The Mayflower Compact;

(6) The national motto;

(7) The Pledge of Allegiance to the United States flag;

(7.1) The Pledge of Allegiance to the Georgia flag;

(8) The National Anthem;

(9) The writings, speeches, documents, and proclamations of the Founding Fathers and Presidents of the United States;

(9.1) The Emancipation Proclamation;

(9.2) The Gettysburg Address;

(10) Decisions of the United States Supreme Court; and

(11) Acts of the Congress of the United States, including the published text of the Congressional Record.

(b) As historical documents, there shall be no content based censorship of American history and heritage documents referred to in this Code section due to their religious or cultural nature.