Skip to content
AU | Americans United logo
DONATE
  • Home
  • About Us

    About AU | Mission and Values

    FAQ

    History

    Our Team

    Board of Directors

    Faith Advisory Council

    Careers

    Contact Us

  • Our Work
    KEY ISSUES

    Our Work

    Separation of Church and State 101

    Public Education

    LGBTQ+ Equality & Religious Discrimination

    Reproductive Freedom

    Civil Rights & Religious Freedom

    Fighting Christian Nationalism

    Legal & Policy Advocacy

    Court Cases

    Bill Tracker

    Report a Violation

    EDUCATION & RESOURCES

    Toolkits and Resources

  • Take Action
    FEATURED ACTION

    Urge Your State Legislators to Protect Church-State Separation

    Get Involved

    Join AU

    Events & Webinars

    Youth Activism

    Protest Signs and Resources

  • News & Media
    FEATURED ARTICLE

    Tips for reporting on white Christian Nationalism

    June 9, 2026
    No person found

    News & Media

    Press Statements

    Church-State Separation Blog

    Church & State Magazine

  • Press
Report a Violation
  • DONATE

    Donate

    Give Monthly

    Planned Giving

    Renew Your Membership

    Support AU’s Legal Fund

    More Ways to Give

    Donation FAQs

Public Schools

Alton Lemon – The Man Behind The 50-Year-Old Lemon Test

Alton Lemon – The Man Behind The 50-Year-Old Lemon Test
June 28, 2021
Liz Hayes

Fifty years ago today, the Supreme Court issued an opinion that pulled together principles from several decades of religious-freedom court decisions and organized them into a straightforward, comprehensive set of guidelines that would enable other courts to consistently decide church-state cases and government officials to easily understand what the Constitution required of them.

That case was Lemon v. Kurtzman, and the guidelines came to be known as the Lemon test. In order for a government action or policy to meet the constitutional requirements of church-state separation, it must meet all three of these criteria:

  • Its purpose must be predominantly secular.
  • It must not have a principal effect of either advancing or inhibiting religion.
  • It must not excessively entangle government with religion.

If you’d like to read more about the history, usage and current status of the Lemon test, check out my recent Church & State magazine article.

Today, I’d like to celebrate the Lemon test’s anniversary by focusing on the man behind the test that bears his name. Here are a few interesting things I learned about Alton Lemon during my research:

  1. Lemon was an Army veteran, government employee and father from Philadelphia. He was active in both the American Civil Liberties Union and the NAACP. Raised a Baptist, he described his beliefs as “ethical humanism” in a 2003 interview with The Philadelphia Inquirer.
  2. Lemon opposed the idea of public money being sent to private schools – it was “an issue around which I have some strong feelings,” he told the Inquirer in 1991. Lemon, who was Black, feared that funneling public money to private schools would erode the quality of public education, which would be especially harmful to minority children: “If a lot of public funds are siphoned off, Blacks and minorities are going to suffer.”
  3. That’s why Lemon agreed to be a plaintiff when the ACLU, NAACP, Americans United and several other organizations filed a lawsuit in 1969 to challenge a Pennsylvania law that diverted taxpayer money directly to private religious schools to pay for teachers’ salaries, textbooks and instructional materials. Ostensibly, the aid was to be used only for “secular” education at the private schools, but the Supreme Court determined that government could not ensure the money wasn’t spent on religious purposes without becoming overly entangled with religion.
  4. Lemon was a two-time winner at the Supreme Court. Two years after the Supreme Court ruled in his favor in Lemon v. Kurtzman, the justices applied the test named after him in Sloan v. Lemon, which challenged a Pennsylvania law that allowed tax dollars to pay for private school tuition. Lemon won again.
  5. Lemon was tangentially involved in at least one other church-state case: In 2002, he listened in on arguments over a Ten Commandments plaque on the wall of a Philadelphia-area courthouse. Upon learning that Lemon was in the courtroom audience, the judge introduced him. That judge, correctly applying the Lemon test, ordered the plaque to be removed. (Sadly, a year later, a federal appeals court reversed that decision and allowed the plaque to stay, citing its historical significance.)
  6. When Lemon died in 2013 at the age of 84, his contributions to church-state separation and civil rights advocacy were noted in The New York Times. Late in life, Lemon wasn’t feeling optimistic about the future of the test that bears his name. “Separation of church and state is gradually losing ground, I regret to say,” Lemon told The Philadelphia Inquirer in 2003.

What I take from Alton Lemon’s story is that fighting for freedom and equality is never quick or easy, and it’s rarely linear – you win some, you lose some, but the key is to press on. Lemon kept pressing on, and he showed that individuals can effect real change. May that be Alton Lemon’s legacy, above and beyond the Lemon test.

PrevPREVIOUSA Televangelist Learns That Religious Freedom Provides No Safe Harbor For His Scam
NEXT UPEnough Highway Robbery: Secularists Challenge Mississippi’s Religious License PlatesNext
Responsive Form

STAY INFORMED

Facebook-f Instagram Linkedin Youtube

Americans United for Separation of Church and State is a nonpartisan, not-for-profit educational and advocacy organization that brings together people of all religions and none to protect the right of everyone to believe as they want — and stop anyone from using their beliefs to harm others. We fight in the courts, legislatures, and the public square for freedom without favor and equality without exception.

1310 L Street NW, Suite 200
Washington, DC 20005

(202) 466-3234
Contact Us

State Nonprofit Disclosures 

Privacy Policy

Financial Information

State Nonprofit Disclosures      Privacy Policy     Financial Information

“Americans United for Separation of Church and State,” “Americans United” and “Church & State” are registered trademarks of Americans United for Separation of Church and State.

© 2026 Americans United for Separation of Church and State. All rights reserved.
BBB Logo
Charity_Navigator_2024_Logo_AU_Navy
Candid Seal Platinum Transparency 2025

Website powered by:

Erawatech - Make peace with technology