There are four ways to qualify for membership in IQuadrivium. Please read the qualifying methods below and, if applicable, refer to our Qualifying Test Scores page.

1. Qualifying Score on a Test Accepted for Standard Admission

This method of qualifying requires that you have proof of having achieved a qualifying score on one of the tests accepted by IQuadrivium for admission purposes. These tests, along with their qualifying scores, are listed on this page under IQuadrivium Qualifying Test Scores.

2. Qualifying Score on a Test Accepted by Another 99.9th-Percentile Society

If you have test scores that are currently accepted by another qualifying 99.9th-percentile society (see para. 4) that are not listed in the section on IQuadrivium Qualifying Test Scores, you may submit proof of you score as described in How to Apply for Membership. Along with your score, please provide the name of the society that accepts the test and the name and email address of the membership officer or president of that society, so that we may verify this information in a timely manner.

3. Scores on Tests Not Accepted by Other 99.9th-Percentile Societies

We will evaluate scores for tests not accepted by any other 99.9th-percentile society on a case-by-case basis. If you choose to submit such scores, you may expect a significant delay in processing your application. Along with your score report, you must send information on the test and its scoring that will enable us to evaluate the test for admission purposes. As a minimum, you must provide current point of contact information for the test and its norming. Inclusion of the latest norming report will expedite your request. We will notify you of our decision.

4. Membership in Another 99.9th-Percentile Society

If you are a current or former regular (not honorary) member of another legitimate 99.9th percentile (or higher) society (see below), you may send a letter of acceptance or other proof of membership from that society for admission purposes.

As the types of accepted tests/scores and the membership requirements of some of these societies are questionable, we may not accept membership in "any" 99.9-percentile society. Membership in the following 99.9th-percentile societies is automatically acceptable (other societies may be added to the list in the future; we will evaluate requests based on membership in other societies on a case-by-case basis):

• International Society for Philosophical Inquiry (ISPE) (99.9)

• ISI Society (ISI-S) (99.93)
  

• One in a Thousand Society (OATH) (99.9)

• Triple Nine Society (TNS) (99.9)