A series of computer programs was written for computing the conditional standard errors of measurement (CSEM) for both rights-scored and formula-scored tests based on a method suggested by F. M. Lord (1984), commonly known as Lord's Method IV or the compound binomial method. These programs estimate the CSEM for both raw and scaled scores, average results for two or more forms, and compute form-to-form difference statistics for pairs of forms. CSEM, averages, and differences were computed for the verbal, quantitative, and analytical raw and converted scores for 8 forms of the Graduate Record Examinations (GRE) General Test and for 2 forms each of 15 GRE Subject Tests. The Committee on Standards for Educational and Psychological Testing of the American Educational Research Association, the American Psychological Association, and the National Council on Measurement in Education recommend that test publishers provide estimates of the standard error measurement at a number of widely spaced score levels. The CSEM data produced in this study have been made available to three programs that use GRE scores, along with other criteria, for awarding fellowships. These data also have been made available for use in GRE program publications and in correspondence. (Contains five tables and eight references.) (Author/SLD)