The Delaware Educational Assessment Program publishes annual results from the California Test of Basic Skills by district, school, and grade (1 through 8 and 11). A statewide computer information system was developed to manage the testing program, the massive 10-year longitudinal database, and the information requests received. The Delaware Educational Assessment Management Information System (DEAP-MIS) now provides direct interactive access to statewide test results by any school administrator or teacher in Delaware. Student information includes personal data, subtest scores, and item response information for each objective. DEAP-MIS was intended to provide useful information to responsible officials, school staff, constituents, and the researchers. On-line help programs and statistical packages to assist in decision making were also made available. After three years of implementation, it was concluded that (1) DEAP-MIS was used primarily by middle-management supervisory staff, principals, and their clerical staff; (2) greatest use occurred after new test scores were added; (3) very few local staff were independent users of the system; (4) requests for state-level assistance increased; and (5) information was used mainly for acquiring facts, informing others, and complying with regulations. (GDC)