How is the WASI Scored?
The WASI-II is initially scored by converting the test takers raw score into a scale score. The scale score represents a common scale that allows for a quantitative comparison between a population of students. From there, the scale score is transformed into a composite score. For example, a composite score on the WASI-II could look like a numerical value of “90-109”. Traditionally, this score represents ‘average” performance. Additionally, on the tester’s scoring sheet, they will also likely see a score labeled percentile ranking (PR). This score demonstrates how the test taker scored against his or her peers. For example, if there is a 70 in this region then the individual will know that they scored better than 70 percent of the other test takers.
Standard Score Ranges for the WASI
“Superior” Performance: 130 and beyond. Individuals who score in this range are considered to be in the superior or “gifted” range.
“Very High” Performance: 120-129. Individuals who score in this range as classified as performing at a high level.
“Bright Normal” Performance: 110-119.
“Low Average”: 80-89
“Borderline Mental Functioning”: 70-79