(a) A school district may educate students about the history of traditional winter celebrations, and allow students and district staff to offer traditional greetings regarding the celebrations, including:
(1) “Merry Christmas”;
(2) “Happy Hanukkah”; and
(3) “happy holidays.”
(b) Except as provided by Subsection (c), a school district may display on school property scenes or symbols associated with traditional winter celebrations, including a menorah or a Christmas image such as a nativity scene or Christmas tree, if the display includes a scene or symbol of:
(1) more than one religion; or
(2) one religion and at least one secular scene or symbol.

(c) A display relating to a traditional winter celebration may not include a message that encourages adherence to a particular religious belief.