The CDAT is free to administer to individuals or groups. Users of the test must register contact information in order to download the test booklets from this site. Users of the test also see to the scoring of student responses using the holistic screening approach.
Standardized scoring services will use Comparative Judgement data collected online at https://compare.drawingtest.org. Initially, scoring services will require provision of a full norm set of student responses. Art educators may exchange assessment services for assessment results. In other words, the cost of assessment results may be reduced or eliminated competely in exchange for completing assessments of other art educators’ student responses.
Student responses to the four CDAT responses will be uploaded as four-page PDF files and idenitifiable only by unique student ID codes. Comparative Judgment data collection will continue with each assessor until each item’s rank result is unique for that assessor. Estimated scale scores will be computed using the Bradley-Terry-Luce model based on holistic paired comparison judgments of three assessors with high reliability coefficients.