A study was conducted at William Rainey Harper College (WRHC) to determine why students stopped attending classes during fall 1979 without officially withdrawing. From a group of students who were reported to be not attending classes at midterm, 400 students were selected for the survey. The questionnaire solicited information about why students stopped attending and why they didn't officially withdraw, student interaction with faculty and counselors, student major, reenrollment plans, employment during enrollment, involvement in student activities, and time spent informally on campus. Selected findings, based on a 71.5% response rate, indicate that approximately 1,500 students are declared to be in nonattendance at midterm each semester. The major explanations why students stopped attending classes centered around job pressures, personal reasons, irrelevancy of course objectives, ineffective instructors, heavy course load, and inconvenient class times. When asked why they had not withdrawn officially, 34.3% said they actually did withdraw from the course and 21% indicated that they weren't aware of the procedure or did not think it necessary to withdraw. Of the respondents, 82% had not talked with a counselor and 71% had never spoken with their instructor outside of class. The study report details methodology and findings, comparing the survey responses of students who withdrew with those of students who stopped attending. Data on student characteristics, the questionnaire, and student comments are included. (AYC)