Tests & Test Scores

International Society for Philosophical Enquiry

World’s Oldest 99.9% IQ Society

Please read the information and instructions carefully. Should you have further questions, you may send a message to the Director of Admissions at admissions@thousanders.com .
As our continuing advertisement  in the Mensa Bulletin states, for a limited time, we will accept evidence of your admission in any other well-regarded 99.9% IQ organization as evidence necessary  to establish your qualification for admission in ISPE. It has to be from an organization that has rigorous standards to assess ability at the 99.9th percentile level. There are many of them but we are the oldest. Simply contact our Director of Admissions and submit evidence of membership in any other well-regarded organization and we will reply promptly. *
The minimum age requirement for admission is 18.  The standardized tests and minimum scores listed are the only tests accepted at this time. ISPE also employs its own normed test of ability that can be taken for a nominal testing fee.  In the event that you do not qualify on one of our accepted standardized tests, or want to take our self-test, this is available to you.  See the instructions listed below for submitting all test scores and for taking our own test. Follow these directions carefully.

American Mensa test scores – American Mensa test scores on tests taken prior to April, 2001 provide a numerical score. Those members who scored 149 qualify for membership in ISPE.  The members who took the SRA Primary Mental Abilities Test prior to April 2001 and scored 149 for admission to American Mensa qualify as well. Tests taken after that time, do not provide scores.  Thus, they cannot be accepted. Please see the additional information provided below the test scores. 

Mensa scores from other countries – Where a separate test is used, they are listed separately below standardized test scores. Standardized tests and scores are always accepted.

Score Reports and Documentation–  Applicants must submit reports and documentation that clearly state the name of the specific test taken and the score achieved. They must be from the agency, organization, or professional that issued the results. If you do not have this, one can be obtained from them. See the list below the scores for information.

Tests are listed alphabetically. They are listed by abbreviation first for your convenience. 

* Please take note that the threshold for acceptance by Mensa is a demonstrated IQ at the level of the 98th percentile or higher on certain standardized IQ tests of intelligence. The threshold for ISPE is at the 99.9th percentile or higher on many standardized IQ tests of intelligence.


ACT (American College Testing program) taken prior to October, 1989
ACT (American College Testing program) taken after September, 1989
ATGSB (American Test for Graduate study in Business)
CTMM (California Test of Mental Maturity)
Cattell A&B combined raw score
Cattell Intelligence Test, Scale IIIB (verbal)
Cattell CFT 20-R Grundintelligenztest
GMAT (Graduate Management Admission Test)
GRE (Graduate Record Exam) combined verbal and quantitative through Sept. 2001
GRE combined verbal, quantitative and analytical, 1982 – Sept. 2001
GRE scores after Sept. 2001 are not accepted
not accepted
LSAT (Law School Admission Test) after May 1991
LSAT June 1982-May 1991
Scores of 48 or higher are accepted on all tests. During this time, the scales
48 (10-50 scale)
were changed from a 10-50 to a 10-48 scale.
46 (10-48 scale)
LSAT (Law School Admission Test) through May 1982
MAT (Miller Analogies Test)
472 scaled
85 raw 
RAIT (Reynolds Adaptive Intelligence Test)
Raven’s Advanced Progressive Matrices, Set II (APM)
Raw Score 35
Scaled Score 146
SAT Scholastic Aptitude Test (combined verbal and math) taken prior to 1995
SAT Scholastic Aptitude Test (combined verbal and math) taken April 1995 – February 2005)
SAT Scholastic Aptitude Test taken after February 2005
not accepted
Stanford-Binet Intelligence Scale, Form L or M
Stanford-Binet Intelligence Scale, Form LM
Stanford-Binet Intelligence Scale, Form SB-IV
Stanford-Binet Intelligence Scale, Form SB-5
WAIS II, III, IV (Wechsler Adult Intelligence Scale) full Scale IQ

AGCT/GT (U.S. Army General Classification Test) taken prior to 1976
Raw 157
NGCT (Naval General Classification Test) taken 1954 through 1977 only

American Mensa Admission Test IQ – taken prior to April 2001
and SRA Primary Mental Abilities – taken prior to April 2001
Germany - IBF-S, ISA-S, BIS-HB tests
Austria ISA-S Test
Mensa UK – Standard tests and scores administered from Mensa UK are accepted with the exception of Cattell-IIIB because an insufficient ceiling is reported.


The following information is provided for your convenience to obtain your reports and documentation.
What is acceptable documentation?

Applicants must submit reports and documentation that clearly state the name of the specific test taken and the score achieved.  They must be from the organization, agency or professional that administered the test or the organization or agency that holds and archives the test results. 

Tests administered by individual psychologists – 
The documentation must be provided by the psychologist on individual, clinic or agency letterhead. It must state the candidate’s name, date of the test, name of the test, full scale IQ.

Tests administered and held by an organization or held and archived by an organization or agency:

American Mensa – email or write to the address provided under “Qualifying Scores” This applies only to scores on Mensa tests taken in 2001 or prior years and a score of 149. Mensa also administered standardized tests for admission in years prior to developing its own test.  If Mensa administered your test, contact Mensa for scores.
Mensa Austria – To obtain your documentation you should contact the organization through your website.  

Mensa Germany – To obtain your documentation you should contact the organization through your website. 

GMAT – Graduate Management Admission Council, 1600 Tysons Blvd. Ste. 1400, McLean, VA  22102; 866-505-6559; gmac.com

GRE – Educational Testing Service, P.O. Box 592, Princeton, NJ 08540; 609-921-9000; ets.org

SAT – SAT Program, College Board, P.O. Box 8057. Mt. Vernon, IL 62864; collegeboard.com

ACT – American College Testing, P.O. Box 168, Iowa City, IA 55240; act.org

LSAT – LSAC, Box 2000-T, Newtown, PA 18940; lsac.org

Military Tests - AGCT, NGCT – National Personnel Records Center, Attn: Military Personnel Records, 9700 Page Blvd, St. Louis Mo 63132; archives.gov/st-louis/military-personnel

MAT – Psychological Corporation, 555 Academic Cir., San Antonio TX 78204; 800-622-3231; pearsonassessments.com

ISPE TEST – ISPE has used its own normalized test for admission since 1974. These tests have been normalized using techniques established by psychometricians specialized in the field. They are designed to assure you and the Society that you have an IQ of 99.9% or above.  ISPE has its own normalized test for those who do not speak English as their first language. Should you wish to take it. You may do so upon request. 

Should you desire to take this test for admission, please follow the directions listed under ISPE Test. You will be required to fill out an application form and pay a $15 testing fee. The Director of Admissions will then provide you with the test. Your testing and results can be accomplished timely through the website.  


Why ISPE? 

Founded in 1974, we are a Global organization. We are the oldest 99.9% IQ society in the world. We are proud of that, but what made us grow? What made us unique? Since our first Charter we have helped each other, helped others outside the Society and have done things that are beneficial to Humanity.  Now that we are in the electronic and internet age our ability to engage in real time has been exponentially enhanced. 

Those who join us are in for an exciting time as they accept the immediate benefits and take advantage of the real-time participation provided by our unique private social network, activities, special interest groups, and member organization software. 

Immediate Benefits –

  • Member Certificate – Each new member receives a personalized membership certificate that is suitable for hanging. 
  • Membership Card – Each new member receives a personalized membership card.  This wallet-sized card proudly certifies you as a member of the Society.
  • Telicom – Each new member receives a subscription to our unique Journal, Telicom. Published since 1974, it has evolved into a minimum standard 64-page edition (frequently however 2-3 times that size) published quarterly. Member contributions are always invited. 
  • Telicom Fiction Issue- The inaugural edition is anticipated in Fall 2018 and it is hoped it will become an annual tradition.
  • Email Blast– Each  member receives weekly updates (approximately) regarding ISPE business, This supplements Telicom, informs members, and acts as a vehicle for conducting the day-to-day business of the Society.
  • Unique Private Social Network – Each new member has the opportunity to engage real-time with fellow members without the burden of email addresses. Here, members may join with others in Groups based on professions, hobbies and interests, or create their own blog or Group. It has its own Forum. Members share information, ideas and help each other in real time. 
  • Unique Private Member Directory – Each new member has immediate access to our auto-updating private member Directory. Access is twenty four hours a day, seven days a week. Members may access information in many ways. Members can use this information to connect with each other based on location,  mutual languages, hobbies and interests.
  • Unique Organization Software – Each new member has immediate access to the latest information and participation with fellow members through our unique organization software. Upon entrance into their own member area with a dashboard feel, they can select from options ranging from reading the latest bulletins to participating in a special project.  There is always something to do if you put your mind to it. Information and participation are key to us.