ESTIMATOR

Based on over 25 years of research and development ESTIMATOR was developed to make using the discrepancy formula easy. The tools contain reliabilities and tests to analyze correlations for all aptitude (IQ) and achievement tests approved for making LD classifications while executing rapid reliable calculations.

• 75 Acheivement and 28 Aptitude Tests - Many offering multiple score options. Any pair of achievement and aptitude scores from these tests can be entered into Estimator.
• Store and Manage Reports - Store and manage your Estimator reports through our easy to use Dashboard.
• Optimized to Work Across Devices - The Estimator was developed to work across desktops, tablets and phones, giving you access to the report data when and where you need it.

ESTIMATOR offers support and resources for interpreting and rating test scores.

• Relevant Articles and Presentations - On a variety of LD assessment topics.
• A complete list of tests and scores approved for use with Estimator - A valuable guide to choosing technically adequate tests when purchasing decisions are made.
• Detailed description of rating procedures and criteria used by the LD Test Selection Committee - When reviewing tests for inclusion in the program.
• Program manual describing program features including the severe discrepancy formula used in Estimator - With step-by-step procedures for calculating severe discrepancy.