Use a standardized IQ test administered by a licensed psychologist
Take a recognized test such as WAIS, WISC, Stanford-Binet, or Raven’s Progressive Matrices
Ensure the test is age-appropriate
Complete the test in a quiet, distraction-free setting
Follow all instructions exactly as given
Answer all sections, including verbal, logical, memory, and processing tasks
Avoid using outside help or reference materials
Review the official score report provided after testing
Compare the score to the test’s norm group
Retest only if recommended by a professional or after a suitable interval