This report provides information on test development, test administration, and score interpretation for the Graduate Management Admission Test (GMAT). The GMAT, first administered in 1954, provides objective measures of an applicant's abilities for use in admissions decisions by graduate management schools. It is currently composed of five sections: (1) Reading Comprehension; (2) Problem Solving; (3) Practical Judgment; (4) Data Sufficiency; and (5) Usage. New test forms are developed systematically from a test item pool. New items are pretested at regular test administrations and evaluated empirically. Test specifications are the blueprints for assembling a final test form. Uniform test administration conditions are maintained through responsible supervision and careful test security procedures. In addition, several publications provide all examinees with GMAT test information and test taking strategies. The GMAT score scale has a mean of 500, a standard deviation of 100 for the base group, and a possible range from 200 to 800. Angoff's methods are used to equate scores. Continuing validity studies (predictive, content, and construct) provide an important basis for score interpretation information on reliability, standard error, descriptive statistics, and biographical data for examinees are also given to assist in score interpretation. Appendices contain sample GMAT test items and methods for calculating reliability coefficients and equating parameters. (BS)