Reference Tables for Identifying Students with a Specific Learning Disability

Published: 8/21/2015 4:26 PM

​This page contains the reference tables used to determine student eligibility under the Specific Learning Disability category. 


These tables are used by district evaluators and others who perform diagnostic evaluations as part of the identification process for special education.  If you have questions regarding the reference tables on this page, please contact Robert Meacham at (502) 564-4970.

Updates are now available for the following instruments and their pairings: WISC-V, KTEA-3 and WJ-IV.  Test pairings previously published may not be available for updated test editions simply because comparative studies between many instruments that took place in the past were not conducted for tests updated in the fall of 2014. For example, pairings between the WISC-V and WJ-IV Achievement, and WJ-IV Cognitive and KTEA-3 are not part of the update as current correlative data for these tests are not yet, nor are they anticipated to be made available. Districts may continue using older pairings that were included in this update and published on this site through December 2015. Districts that use the Stanford Binet 5 and the Universal Nonverbal Intelligence Test for LD identification will NOT have pairings beginning in January 2016.


How to use the Discrepancy Tables

LD Tables Update - Interim Decision Making Letter This letter explains why changes have taken place with the tables.

The following links include the pairs of aptitude and achievement tests that might be used in calculating an aptitude-achievement discrepancy using the Regression Estimated True Score Method. 
For each test pairing, the age level and table reference is provided.  For example, the line looks like the information below:


Apt Test              Achievement Test Pairing                 Age     Table/Col
WISC-V FS          KTEA III Math Computation               6        2-E
In this pairing the WISC-V Full Scale IQ score and KTEA-III Math Computation score would be used.  For a student age 6, the appropriate table of criterion values would be Table 2.  In Table 2 the user would locate the criterion value in Column E that corresponds to the student’s WISC-V Full Scale IQ score.  This criterion value would then be compared to the student’s achievement score on the KTEA-III Math Computation score test.
Special Notes
The L.D. Advisory Group recommends a minimum 14 point difference between the Verbal and Non-Verbal IQs on the Stanford-Binet 5 before considering the higher of the two scores as the best measure to be used in determining an aptitude/achievement discrepancy.


Updated Tests for 2015-16
Cognitive WISC-V

Cognitive WISC-IV- will be removed in December 2015
Cognitive K-ABC II (MPI, FCI, NVI)- will be removed in December 2015
Cognitive SB 5 (Stanford Binet 5)- will be removed in December 2015

Cognitive UNIT Standard- will be removed in December- will be removed in December 2015

Cognitive UNIT Extended- will be removed in December 2015
Cognitive WAIS IV
Cognitive Woodcock Johnson III- will be removed in December 2015