The Microcomputer Diagnostic Testing Project (MDTP) was designed to broaden the use of microcomputers in student testing, for elementary and secondary school use, and for a variety of test item formats. MDTP was designed to administer tests, to allow teachers to create or revise tests, to print out test forms when desired, to score tests, to perform item analysis, and to be user-friendly. The first year of the three-year project resulted in the development of multiple choice, true-false, and A or B test items. System programs were written in BASIC for Apple microcomputers. Field testing classrooms were selected from several school districts in North-Central Alberta, Canada. Feedback was obtained and modifications were made as the project continued. There were problems associated with the way computers were distribued in schools, and the way in which various types of test formats were administered. It was found that this testing program was more readily used at the elementary level. It was also discovered that a simple way to incorporate mathematical characters was needed. Teachers' attitudes, based on preliminary surveys, were positive, but not overwhelmingly positive. (GDC)