A study evaluated use of computer-assisted instructional (CAI) systems to deliver literacy training for Job Training Partnership Act (JTPA) participants at the Texas Center for Adult Literacy and Learning. Participants, who were categorized as upper-level students (7th-12th grade equivalents) or lower-level students (0-6th grade equivalents), were given the Test of Adult Basic Education as a pre- and posttest to identify increases in reading, mathematics, and language. Participant attitude surveys were also administered in pre- and posttests, and participants, teachers, and administrators were interviewed. The following results were among those reported: (1) overall increases were shown in each skill area; (2) the CAI systems were most useful in supporting reading and math instruction, although upper-level students also benefited from the language components of the CAI systems; (3) with lower-level students, the more effective CAI systems were those that were integrated with traditional teacher/student instruction, although upper-level students were equipped to work with CAI systems in self-directed modes; (4) student and staff attitudes were positive; (5) the PLATO/CCC configuration was clearly the most effective system for supporting math instruction and was also effective as a support for language (Plato is the name of computer software developed by the Control Data Corporation and CCC means Computer Curriculum Corporation); and (6) the lowest-skilled groups of learners benefited less than more skilled students from CAI. (Appendices list teacher observations and recommendations, student comments, and important aspects of CAI.) (CML)