Lemon Test Law and Legal Definition

Lemon test refers to the process of determining as to when a law has the effect of establishing religion. The Lemon test was formulated by Chief Justice Warren Burger in Lemon v. Kurtzman, 411 U.S. 192 (U.S. 1973).

The court in Lemon v. Kurtzman ruled three requirements for government concerning religion, they are :

1.The government's action must have a secular legislative purpose;

2.The government's action must not have the primary effect of either advancing or inhibiting religion; and

3.The government's action must not result in an "excessive government entanglement" with religion.

Lemon test states that if any of the requirements are violated by government, the action is deemed to be unconstitutional under the Establishment clause of the First Amendment to the U.S. constitution.