This computer program, written in BASIC, performs three different calculations of test reliability: (1) the Kuder-Richardson method; (2); the "common split-half" method; and (3) the Rulon-Guttman split-half method. The program reads sequential access data files for microcomputers that have been set up by statistical packages such as STATPAC. The program is written in MS-DOS BASIC and is intended for use on IBM microcomputers and compatibles. Some of the program's statements may be changed for use on an Apple IIe microcomputer. The bulk of this document contains the main menu program; program flow charts and statements; and lists of variables, arrays, and notations. (GDC)