The course of instruction in all public schools should include, at some appropriate grade level or levels, as determined by the local board of education, courses and content designed to educate children in black history and culture and the contribution of black people to the history and development of this country and of the world. The general assembly finds that the goal of curriculum shall include the history, heritage, culture, experience and ultimate destiny of all social, ethnic, gender and national groups and individuals, and that such are represented as interdependent, interactive and complementary. The state board of education shall include multicultural diversity when developing frameworks and curricula to be taught at appropriate grade levels kindergarten through grade twelve (K-12).