---
title: "Clergy Letter Project"
chunk: 3/4
source: "https://en.wikipedia.org/wiki/Clergy_Letter_Project"
category: "reference"
tags: "science, encyclopedia"
date_saved: "2026-05-05T04:31:02.701609+00:00"
instance: "kb-cron"
---

We believe that evolution is a foundational scientific truth, one that has stood up to rigorous scrutiny and upon which much of human knowledge and achievement rests. Omitting evolution from science teaching, or treating it dismissively as “only a theory,” miscommunicates its centrality in modern biology and threatens students’ understanding of the very nature of science. Along with our religious allies of other traditions, we ask that science remain science and that religion remain religion. We urge public education authorities to preserve the integrity of the science curriculum by affirming the teaching of evolutionary theory as a core component of human knowledge. 

== History ==
The project was organized in 2004 by Michael Zimmerman, then a biology professor and dean of the College of Science and Letters at University of Wisconsin–Oshkosh. He was motivated to create a petition by the actions of the school board in Grantsburg, Wisconsin, which had passed some anti-evolution policies in the summer of 2004. Zimmerman was a veteran of similar disputes in Ohio, when he was a professor at Oberlin College. After Zimmerman watched Christian fundamentalist clergy from Dover, Pennsylvania, on the television program Nightline insisting that decisions about teaching evolution in schools was equivalent to a choice between heaven and hell, he recruited the husband of the head of the university Psychology Department, John McFadden, pastor of the First Congregational United Church of Christ in Appleton, Wisconsin, to write a letter describing how science and religion can co-exist.
Zimmerman worked with local clergy in Wisconsin to get clergy to sign this letter, and within a few weeks he had collected almost 200 clergy signatures. The signed letter was delivered to the Grantsburg School Board on December 16, 2004. This effort, together with those of other concerned groups of educators, citizens and scientists, lead the Grantsburg School Board to rescind its policies.
After this success, Zimmerman was encouraged to organize a nationwide campaign and gather more signatures. By September 12, 2005, the Clergy Letter Project had collected more than 7,500 signatures. By the beginning of December 2005, the project had amassed more than 10,000 signatures. Most of the clergy who signed are Protestant, an artifact of the way that people were originally invited to sign the letter. Email invitations were sent; it was easier to get email addresses for some churches and denominations than others.
The clergy letter was at first limited to Christian clergy, and Zimmerman declined offers from Jewish and Muslim clergy. Zimmerman stated that "Since it is fundamentalist Christian ministers who have been shouting to the American people that they must choose between religion and science, it seemed reasonable to have thousands upon thousands of Christian clergy assert otherwise. It simply wouldn't be very persuasive to have leaders of other religions saying to Christians that Christian fundamentalist ministers are not speaking for all Christians...the Clergy Letter Project and Evolution Sunday are not designed to change the minds of fundamentalists. Rather, our goal is to educate the vast majority of Christians who, if told they have to choose between religion and modern science, are likely to opt for religion."
More recently, four additional statements have been added to the project: a Jewish rabbi letter, a Unitarian Universalist clergy letter, a Buddhist clergy letter, and a Humanist clergy letter.

== Evolution Weekend and related activities ==
Zimmerman and the Clergy Letter Project also organize "Evolution Weekend," an annual movement to encourages churches to discuss the role of science and religion in sermons, discussion groups, seminars, and other activities on the weekend nearest to February 12, the birthday of Charles Darwin (Darwin Day). The day began in 2006 as "Evolution Sunday," gaining attention from The New York Times. In 2008, it was renamed "Evolution Weekend" to incorporate more faith traditions. In 2011, 652 congregations from all 50 states and the District of Columbia as well as 13 countries participated in Evolution Weekend activities.
Zimmerman and the Clergy Letter Project maintain a list of 1,052 scientists from all 50 states, the District of Columbia, Puerto Rico, and 32 countries, who have agreed to serve as "technical consultants to clergy members who have questions about the science associated with all aspects of evolution." The project states that "The very existence of this list clearly demonstrates the willingness of scientists to work collaboratively with clergy members. Together, scientists and clergy members demonstrate that religion and science can have a complementary and positive relationship with one another."
Evolution Weekend often gained attention from several news outlets, with participating clergy being interviewed in local publications.