The primary characteristics of a Super Nerd are Intelligence (or Knowledge, or Aptitude) and Enjoyment.
A person can only test Positive or Inconclusive to being a Super Nerd. There is no conclusive test to determine if you are NOT a Super Nerd, but you can be fairly certain if you answer Yes to the Negative Test.
Answer at least 1 of these. More tests will be added in the future. Please let me know if you have devised a good test.