This study was designed to illustrate the use of the Rasch model procedure to equate the Dade County Compensatory Education Skills Test (DCCEST) to the State Student Assessment Test (SSAT) for both mathematics skills and communications skills. The SSAT was a test developed by the Florida State Department of Education to measure students' level of mastery of specific basic skills in mathematics and communication. It is administered annually to Florida students. The DCCEST was developed by the Dade County Public Schools Testing Department to parallel the SSAT. It was designed to provide a valid measure of the degree of mastery achieved by students who had been given instruction in specific skills. The analysis was conducted using the equating procedure of the Rasch model. Item difficulty and parameter estimates were computed for the SSAT and the DCCEST. The BICAL computer program was used to compute the parameters. This procedure was useful as an empirical study of the use of the Rasch model in a criterion referenced evaluation. It was a cost effective and valid measurement of achievement. (DWH)