This article invokes a literal image of test givers as measurement devices and explores the psychometric properties of these test administrator instruments. Concurrent and content validation and test-retest and parallel-forms validity are explored. (SLD)

A standardized achievement testing program was begun in Alum Rock, California in the fall of 1972 as part of an evaluation of an Educational Voucher Demonstration. During each of the first three years of the demonstration both the form of test administration and the particular level of the standardized achievement test that a student is assigned…