A study focused on 10th-grade students for the 1990-91 school year at Arthur Hill and Saginaw High Schools, Michigan, to examine system-related problems in course selection/scheduling that may decrease student enrollments at the Averill Career Opportunities Center (COC). A random sample consisted of 316 of 472 regular education students at the 2 schools. Three major research questions guided the study: whether course passage history affected decisions to attend COC; whether students with a 2.51 or greater grade point average (GPA) enrolled in COC more often than students with lower GPAs; and whether students with better average hourly attendance enrolled in COC more often. Results of chi-square statistical test analyses indicated deterrents to enrollment at COC were passage of the language arts requirement, success at or above a certain level, full load schedules, and 2.51 or higher GPA. The tendency to attend COC was not the same for the major racial/ethnic groupings or both genders. Students with a lower than average hourly attendance record enrolled in COC more often. Recommendations were a limitation on the amount of competing electives, consistency between high schools in titling courses, effective high school attendance policies, alternatives to meet requirements, and consistent recordkeeping. (The 18-page report is followed by these appendixes: 17 references and 62 data tables that present chi-square statistical test results.) (YLB)