The course deals with the statistical processes of determining comparable scores on different forms of a test and adjusting for test difficulty differences so that only real differences in performance are reported. It deals with concepts of equating including equating properties, equating designs, equating methods, equating error and statistical assumptions necessary for equating. Computation of equating functions and the interpretation of results from equating analyses are covered. The importance of equating to test development and quality control measures are discussed. The use and interpretation of relevant statistical software will also be treated. Students will design a reasonable and useful equating study and conduct equating in a realistic testing situation.