Computer Assisted Instruction (CAI) is among the range of strategies being used to improve student achievement in school subjects, including reading. Programs for CAI have come a very long way since these were first developed over two decades ago. These programs tutor and drill students diagnose problems, keep records of student progress, and present material in print and other manifestations. It is believed that they reflect what good teachers do in the classroom.Students are expected to benefit from CAI. Among the benefits that have been expected are better and more comfortable learning for students, since they learn at their own pace and convenience; opportunities to work with vastly superior materials and more sophisticated problems; personalized tutoring; automatic Measurement of progress; and others. Teachers as well are expected to gain from CAI, as they experience less drudgery and repetition, greater ease in updating instructional materials, more accurate appraisal and documentation of student progress, And more time to work directly with students.