There are quite a few IQ tests being used today and each test has their own range of IQ scores to determine the intelligence of the individual taking the test. By understanding the various testing ranges and scores, a person can understand where their intelligence falls compared to the rest of mankind.

Wechsler

The most popular IQ tests currently performed are the Wechsler Adult Intelligence Scale and Wechsler Intelligence Scale for Children. Founded in 1939, they have made five variations of the test.

The test for children measures the IQ of those between the ages of 6 through 16. The test is used by psychologists to find learning disabilities and dysfunctions that a child may have earlier on in life so they can be placed in appropriate educational programs that best suit their needs.

The Wechsler Scale’s intelligence scores range as follows:

IQ Range ("Deviation IQ")IQ Classification
145-160Very gifted or highly advanced
130-144Gifted or very advanced
120-129Superior
110-119High average
90-109Average
80-89Low average
70-79Borderline impaired or delayed
55-69Mildly impaired or delayed
40-54Moderately impaired or delayed

Stanford-Binet

This test is on the fifth version and can be administered both verbally and non-verbally. The Stanford-Binet test is an adaptive IQ test and changes based on the test takers age level and needs. It is used to find learning disabilities and other dysfunctions in children that may require additional educational help.

The Stanford-Binet IQ score ranges are as follows:

IQ Range ("Deviation IQ")IQ Classification
145-160Very gifted or highly advanced
130-144Gifted or very advanced
120-129Superior
110-119High average
90-109Average
80-89Low average
70-79Borderline impaired or delayed
55-69Mildly impaired or delayed
40-54Moderately impaired or delayed

Of course there are other IQ tests and they have varying scoring ranges, but generally, the most used platform for scoring has 100 being the average IQ score with a range of plus or minus ten points.

Wonderlic

The Wonderlic is another popular cognitive ability test, though it’s not necessarily an IQ test. However, this is the most popular intelligence test given by employers and education providers because it’s quicker and easier to administer. 50 multiple choice questions are asked and have to be answered in 12 minutes. Each correct answer is worth one point.

The table below correlates the Wonderlic score with the percentile of intelligence. So, for example, if you score a 30 you are in the 86th percentile of human intelligence, which is well above the average score which is generally accepted to be between 20 and 22.

Wonderlic ScorePercentile
0-8
95
106
118
1210
1313
1416
1519
1623
1727
1831
1936
2041
2146
2251
2357
2462
2567
2671
2776
2880
2983
3086
3189
3291
3393
3495
3596
3697
3798
3898
3998
4099
4199
4299
4399
4499
4599
4699
4799
4899
4999
5099