Lawrence Central High School (LHS) is a suburban school near Indianapolis, Indiana, that implemented in 1998-1999 an extensive remediation program to increase the passing rates of their students taking the state's mandated competency examination, the Indiana State Testing for Education Progress (ISTEP) examinations. The number of students in the class of 2000 who failed either the mathematics or English component of the test dropped from 406 students in the beginning of the implementation year to 74 students by the end of the year. An evaluation was conducted to study the manner in which the PLATO (registered) Pathways program was used in the mathematics and English remediation courses at LHS, to examine the effectiveness of the ISTEP remediation effort, and to suggest possible areas of improvement for future PLATO implementation and use. Student ISTEP scores increased dramatically in the fall 1998 and spring 1999 retests, and a significant positive relationship was identified between student grades achieved in the fall 1998 Skills courses and ISTEP test scores. Students reported that the PLATO computer lessons made them feel more confident about doing well in school, and they generally agreed that the PLATO courseware was easy to use, easy to understand, allowed them to work at their own pace, and that they tried hard to learn from their assigned PLATO modules. Teachers generally were positive about PLATO courseway and believed it contributed to student improvement on the ISTEP courses. Suggestions are outlined for maximizing the effectiveness of future PLATO use at LHS. (Contains 6 tables and 18 references.) (Author/SLD)