34 CFR Part 104 - Nondiscrimination on the Basis of Handicap in Programs or Activities Receiving Federal Financial Assistance (with amendments issued through July 2017)

(3) Tests are selected and administered so as best to ensure that, when a test is administered to a student with impaired sensory, manual, or speaking skills, the test results accurately reflect the student's aptitude or achievement level or whatever other factor the test purports to measure, rather than reflecting the student's impaired sensory, manual, or speaking skills (except where those skills are the factors that the test purports to measure).