As used in §§ 13-53-49 to 13-53-53, inclusive:
(1) "Expressive activity," protected under the provisions of §§ 13-53-49 to 13-53-53, inclusive, includes any lawful noncommercial verbal or written means by which one person communicates ideas to another, and includes peaceful assembly, protests, speeches, distribution of literature, the carrying of signs, and the circulation of petitions; and
(2) "Intellectual diversity," denotes a learning environment that exposes students to and encourages exploration of a variety of ideological and political perspectives.