This publication discusses the increasing problem of student absenteeism and describes an experimental school attendance policy that was implemented at Napa (California) High School in 1975. The policy designates a maximum of 12 absences per semester as the maximum allowable for each student under normal circumstances; after 13 absences from any class, students risk forfeiture of credit and can be dropped from class enrollment. The policy also provides that after a student's fourth, eighth, and twelfth absences from any class, his parents will be sent a written form indicating the dates of the student's absences. During the first year under the new attendance policy, absenteeism at Napa High School was reduced approximately 50 percent, from an average of 8 to 10 percent for 1972-74 to 4.5 percent for 1975. A complete copy of the Napa High attendance policy and a sample of the parent's notification form are included. (JG)