Also known as:church-state separation · wall of separation · establishment clause
Written by attorneys · grounded in primary & secondary sources — see below
The constitutional principle derived from the Religion Clauses that prohibits government sponsorship, financial support, or active involvement in religious activity. Religious beliefs and worship remain matters of private choice rather than state prescription or endorsement.
Sources & Authorities
How it applies
Common Examples
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Visa Restrictions Upheld on Security Grounds
President issues an order limiting student visas from several majority-Muslim nations after intelligence reports flag espionage risks in technical fields. Spencer Silver, a university administrator, and affected students challenge the order under the Establishment Clause citing campaign statements. The court applies rational basis review and upholds the order because it recites a legitimate national security purpose rationally related to the restrictions.
University Funding for Religious Publications
The University of Virginia denies funding to a student newspaper focused on religious viewpoints while funding secular publications. Solomon Silver, the newspaper's editor, sues claiming viewpoint discrimination. The court holds that the university must provide equal access to the funding program because excluding religious speech violates neutrality principles.
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Cases
Casebooks
Hornbooks
Study Supplements
Dictionaries
Rosenberger v. Rector and Visitors of the University of Virginia515 U.S. 819 (1995)
Compelled Flag Salute in Schools
A state board requires public school students to salute the flag each morning. Sasha Stone, a Jehovah's Witness parent, objects that the salute conflicts with her child's religious beliefs. The court rules that the state cannot compel participation because the requirement forces students to affirm beliefs against their faith.
West Virginia State Board of Education v. Barnette319 U.S. 624, 638 (1943)
State Aid to Religious School Teachers
State statutes provide salary supplements to teachers in religious elementary schools for secular subjects. Sophia Singh, a taxpayer, challenges the payments as an establishment of religion. The court invalidates the aid because it creates excessive entanglement between government and religious institutions through ongoing state supervision.
Lemon v. Kurtzman403 U.S. 602 (1971)
Ordinance Targeting Religious Animal Sacrifice
A city enacts an ordinance banning animal sacrifice after a Santeria church announces plans to perform rituals. Stephen Shaw, a church leader, sues claiming the law singles out religious practice. The court strikes down the ordinance because it targets religious conduct while permitting secular animal killing for food or sport.
Church of the Lukumi Babalu Aye, Inc. v. City of Hialeah508 U.S. 520, 113 S. Ct. 2217, 124 L. Ed. 2d 472 (1993)
Amish Exemption from Compulsory Schooling
Wisconsin enforces its compulsory attendance law against Amish parents who withdraw children after eighth grade for religious vocational training. Skylar Sullivan, an Amish parent, seeks an exemption arguing secondary education conflicts with faith practices. The court grants the exemption because the state's interest in education is satisfied by the community's self-sufficient alternative training.
Wisconsin v. Yoder406 U.S. 205 (1972)
Common questions
Frequently Asked
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Does the principle bar all government funding that reaches religious institutions?+
No. Neutral programs that provide aid to individuals who then choose religious options do not violate the principle when the benefit to religion is incidental to private choice rather than state endorsement.
When does government deference in immigration override Establishment Clause claims?+
Courts apply rational basis review to entry restrictions in foreign affairs and uphold orders stating a legitimate national security purpose rationally related to the restrictions even when statements suggest religious animus.
Supporting sources
Does the principle prevent states from excluding religious schools from generally available education subsidies?+
No. When a state offers funding for private education it must treat religious schools the same as secular ones under neutrality principles and cannot exclude them solely because of their religious character.
Supporting sources
How does the principle interact with Free Exercise claims for religious exemptions from neutral laws?+
Neutral generally applicable laws that incidentally burden religion do not violate free exercise but laws targeting religious conduct or denying generally available benefits solely because of religious status trigger strict scrutiny.
Supporting sources
494 U.S. 872, 110 S. Ct. 1595, 108 L. Ed. 2d 876 (1990)Constitutional Law
…says, between allowing a patchwork of exemptions that would hinder its law enforcement efforts, and risking a violation of the Establishment Clause by arbitrarily limiting its religious exemptions. This argument, however, could be made in almost any free exercise case. See Lupu, Where Rights Begin: The Problem of Burdens on the Free…