Mensa Testing in Washington, DC
Mensa is the world's oldest and largest high-IQ society, welcoming individuals who score in the top 2% of the population on a standardized intelligence test. This comprehensive guide covers the history of Mensa, membership requirements, Washington, DC's connection to Mensa, and everything you need to know about testing in Washington, DC.
Last Updated: July 2026
Mensa History
From its founding in 1946 to today – the story of the world's premier high-IQ society.
Qualifying Scores
Complete guide to accepted tests and score requirements for Mensa membership.
Mensa in Washington, DC
How many Mensa members are in Washington, DC and what the community looks like.
Accepted Tests
Full list of standardized tests accepted by Mensa for membership qualification.
Testing Process
What to expect during the Mensa Admission Test and how to prepare.
Schedule Mensa Testing
Book your Mensa admission test or IQ assessment with a licensed psychologist in Washington, DC today.
The History of Mensa
The Founding: Oxford, England (1946)
Mensa was founded in 1946 at Oxford University in England by two remarkable individuals: Roland Berrill, an Australian barrister, and Dr. Lancelot Ware, a British scientist and lawyer. The two met by chance on a train journey and discovered they shared a common interest in intelligence testing. They decided to form a society for people with high IQs, and the result was Mensa.
The name "Mensa" comes from the Latin word for "table," symbolizing the organization's goal of creating a round-table society where members meet as equals regardless of background, occupation, race, or any other characteristic. The only qualification for membership is intelligence.
The Early Years
Mensa grew slowly at first but steadily gained recognition. By the 1960s, the organization had established chapters in several countries, including the United States. Today, Mensa has grown to over 150,000 members across more than 100 countries, making it the largest and oldest high-IQ society in the world.
American Mensa, the U.S. chapter, now boasts over 50,000 members, representing one of the largest national groups within Mensa International.
Mensa's Three Purposes
Mensa has three stated purposes:
- To identify and foster human intelligence for the benefit of humanity
- To encourage research into intelligence and its characteristics
- To provide a stimulating intellectual and social environment for its members
Washington, DC's Connection to Mensa
Metropolitan Washington Mensa is the American Mensa local group serving the capital region. The official chapter profile identifies it as a Middle Atlantic Region group founded in 1965, with the newsletter Capital M, local officers, proctors, and gifted-youth coordination. Membership and event locations span the wider metropolitan area rather than only the District.
Mensa Qualifying Scores
To qualify for Mensa, you must score at or above the 98th percentile on an approved standardized intelligence test. This means performing better than 98 out of every 100 people who take the same test.
Qualifying Scores by Test
Note that different tests use different standard deviations, which is why the qualifying scores vary. The consistent requirement is the 98th percentile.
Mensa in Washington, DC
Metropolitan Washington Mensa and Local Membership
- Local group: Metropolitan Washington Mensa is the American Mensa chapter serving Washington, DC and parts of the surrounding metropolitan region.
- Current profile: The official American Mensa chapter profile listed approximately 1,602 members when this page was prepared; the number changes and is not a count of DC residents alone.
- Region and history: The group is in American Mensa's Middle Atlantic Region and was founded in 1965.
- Membership rule: Qualification requires performance in the upper two percent on an accepted standardized intelligence test.
- Prior evidence: Applicants may submit qualifying previous scores when documentation meets current American Mensa requirements.
Who Takes a Mensa-Qualifying Test in Washington, DC?
- Adults seeking membership: Personal challenge, intellectual community, social events, or formal documentation.
- Parents of advanced learners: Children may need age-appropriate psychologist testing because youth policies and accepted evidence differ.
- Professionals and students: Some use prior clinical scores obtained for ADHD, learning, gifted, accommodation, disability, or neuropsychological questions.
- Important distinction: A private IQ assessment can provide a detailed clinical report; the Mensa Admission Test is for admission and may not provide the same diagnostic information.
Washington-Area Mensa Events
Metropolitan Washington Mensa offers changing social, intellectual, gifted-youth, special-interest, and regional activities across the DC–Maryland–Virginia area. Locations, eligibility, registration, and testing schedules should be verified through the official chapter and American Mensa calendars.
Accepted Tests for Mensa Qualification
American Mensa accepts scores from approximately 200 different standardized intelligence tests. Tests must be administered by a neutral and qualified third party in a traditional testing environment.
Tests Commonly Administered by Psychologists
- Wechsler Adult Intelligence Scale (WAIS) – FSIQ 130
- Wechsler Intelligence Scale for Children (WISC) – FSIQ 130
- Stanford-Binet Intelligence Scales – IQ 130-132 (depending on version)
- Reynolds Intellectual Assessment Scales – IQ 130
- Differential Ability Scales (DAS) – GCA 130-132
Tests Administered by Schools
- Cognitive Abilities Test (CogAT) – Composite SAS 132
- Otis-Lennon School Ability Test (OLSAT) – Total SAI 132
- Naglieri Nonverbal Ability Test (NNAT) – Nonverbal Ability Index Score 130-132
- Woodcock-Johnson Test of Cognitive Abilities – IQ 131-132
College Preparatory Tests
- SAT (pre-1994) – Combined Verbal & Math 1250+
- GRE (pre-2001) – Combined Verbal & Quantitative 1250+
- ACT (pre-September 1989) – Composite 29+
The Mensa Testing Process
Two Ways to Qualify
Applicants may qualify through the Mensa Admission Test or by submitting acceptable prior evidence from an approved standardized test. Accepted tests, dates, score rules, and documentation requirements can change.
The Mensa Admission Test
Metropolitan Washington Mensa states that it offers the admission test in the Washington, DC area several times per year. Its site says the fee is normally $60, but applicants should verify the current price, promotions, age rules, and available dates directly with American Mensa or the local coordinator.
What the Mensa Admission Test Measures
The admission battery is designed to determine whether the applicant meets Mensa's percentile requirement. It is not a clinical diagnostic evaluation and generally does not provide a detailed cognitive profile for treatment, disability, school, or employment purposes.
Important: The Test is for Admission Only
Use a licensed psychologist when you need a formal IQ score, diagnostic interpretation, accommodation documentation, or a comprehensive report. Before paying for private testing, confirm that American Mensa currently accepts the selected instrument and report format.
Frequently Asked Questions
Mensa was founded in 1946 in Oxford, England by Roland Berrill and Dr. Lancelot Ware. The name comes from the Latin word for "table," symbolizing a round-table society where all members are equal. Today, Mensa has over 150,000 members in more than 100 countries. American Mensa has over 50,000 members.
The requirement is scoring at or above the 98th percentile on an approved intelligence test. This translates to:
- WAIS-IV or SB-5: IQ 130
- Stanford-Binet (older): IQ 132
- Cattell Culture Fair: IQ 148
- SAT (pre-1994): Combined 1250+
Reliable current membership totals for Washington, DC or District of Columbia are not publicly reported. Metropolitan Washington Mensa serves Washington, DC and surrounding Washington, DC metro area counties; consult the local group or American Mensa for current information.
The Mensa Admission Test takes 1-2 hours total, including check-in and instructions. The two test batteries are timed and typically run between 20-25 minutes each.
As of July 2026, American Mensa lists local-group admission testing at $60, private testing at $99, and annual dues at $107. Fees can change, so verify current pricing directly. Independent psychological testing is priced separately by the evaluator.
Yes. Mensa accepts qualifying scores from tests taken at any point in your life, including childhood. You need to obtain an official report from the testing service or school showing your score. Many members join using SAT scores from decades ago.
No. Mensa does not accept online tests for admission. The test must be administered in person by a qualified proctor in a supervised environment. This includes the Mensa Admission Test and any prior evidence you submit.
Yes. Children can qualify for Mensa by scoring at the 98th percentile on an age-normed test. Parents can submit a psychologist's report directly to American Mensa. There is also a gifted youth program for younger members.
The Mensa Admission Test is designed only to determine if you qualify for membership and does not provide a detailed score report. Professional IQ testing (WAIS-IV, SB-5) provides a comprehensive report with Full Scale IQ, index scores, strengths, and weaknesses. Professional testing is better if you need a detailed analysis for school, career, or clinical purposes.
Mensa is primarily a social organization that provides community for people with high IQs. Activities include social events, discussion groups, lectures, game nights, and special interest groups. Mensa also supports gifted education initiatives, scholarships, and research into intelligence.