Does a gai score of 91 in the 27th percentile represent overall intellectual functioning?

GAI is an acronym often applied to General Ability Index, which is used in education or special education settings to define level of function. the 27th percentile would mean there were 73% above and 26% below that score in the population studied. No individual test can adequately represent all intellectual functioning. Without providing context with your post, little more can be said.

The GAI score is made up of tests measuring Verbal Comprehension, Visual Spatial, Fluid Reasoning, Working Memory, and Processing Speed. Scores of 90-109 are in the Average range for an overall intelligence test, I.e. Average intelligence.