1999)[1] was United States federal court case on the constitutionality of a policy requiring teachers to read aloud a disclaimer whenever they taught about evolution.

[2] In April 1994 the School Board of Tangipahoa, Louisiana, adopted a policy mandating that a disclaimer was to be presented before any discussion of evolutionary biology.

The policy was as follows:[3] Whenever, in classes of elementary or high school, the scientific theory of evolution is to be presented, whether from textbook, workbook, pamphlet, other written material, or oral presentation the following statement shall be quoted immediately before the unit of study begins as a disclaimer from endorsement of such theory.

"It is hereby recognized by the Tangipahoa Parish Board of Education, that the lesson to be presented, regarding the origin of life and matter, is known as the Scientific Theory of Evolution and should be presented to inform students of the scientific concept and not intended to influence or dissuade the Biblical version of Creation or any other concept.

Students are urged to exercise critical thinking and gather all information possible and closely examine each alternative toward forming an opinion.