This paper examines the growing problem of high school absenteeism and presents data gathered in a study of student attendance in a large Connecticut high school. Included are graphs displaying schoolwide patterns of absenteeism and a number of statistical tables containing attendance data related to such factors as student age, class, sex, race, religion, I.Q. score, personality rating, and home environment. The author briefly discusses major findings and implications of the Connecticut study and recommends three specific steps to combat rising absenteeism: adoption of a firm and well-publicized attendance policy based on the "no work-no pay" concept, development of an effective reporting system to regularly inform parents of student absences, and implementation of an alternative curriculum for chronic absentees. (Author/JG)