A study was conducted at William Rainey Harper College (WRHC) to provide institutional data about student performance over time. The study involved an analysis of transcript data on a random sample of 200 full-time and 200 part-time beginning credit students who entered the college from fall 1972 to fall 1982. Study findings revealed that: (1) the average student grade point average had risen and fallen in direct relationship to changes in grading policy instituted at the college; (2) the proportion of full- and part-time students who persisted beyond their first year had increased since the late 1970's; (3) the average full-time student will accumulate 43.5 hours while attending WRHC for 4.5 semesters and 36.5% of these students will earn a degree or certificate; (4) the average part-time student will accumulate 17.5 hours and attend 3.5 semesters at WRHC, and 12% will earn a degree or certificate; (5) the proportion of students officially transferring credit hours from other colleges declined from 12% to 7.5% for full-time and from 12% to 7% for part-time students since the mid-1970's; and (6) the proportion of full-time students taking continuing education courses declined from 22% in the early 1970's to 13% in the late 1970's. (HB)