Percentile Ranks

Percentile ranks describe a student's relative standing in a comparison group on a scale of 1 to 99. The student's percentile rank indicates the percentage of students from the comparison group who had scores the same of lower than the student's score. A student's percentile rank of 68 indicates that 68% of the comparison group had scores the same or lower than the student's score. The table below provides the classification of standard scores and percentile ranks of the WJIII DRB.

 

Standard Score Range

Percentile Rank Range

WJIII Classification

131 and above

98 to 99.9

Very Superior

121 to 130

92 to 97

Superior

111 to 120

76 to 91

High Average

90 to 110

25 to 75

Average

80 to 89

9 to 24

Low Average

70 to 79

3 to 8

Low

69 and below

0.1 to 2

Very Low