The purpose of this study was to examine the proportion of students in the cohort class of 2001 who completed Arizona high school graduation requirements within 4 years. The cohort class of 2001 comprises students who entered 9th grade in fall of the 1997-1998 school year, and were expected to graduate from 12th grade by the end of the 2000-2001 school year. The report also provide information about the number and proportion of students who obtained a General Educational Development (GED) certificate, dropped out, or remained enrolled for a fifth year of high school. Rates are summarized at the state level, by gender and ethnicity, by county, and by district and school. The cohort class of 2001 had a membership of 60,367 students. Of these, 70.8 graduated in 4 years, and 7.7% enrolled in a fifth year of high school, so that 72.9% graduated in 5 years. A GED was received by 0.6%. More than 76% of the females received high school diplomas, and fewer than 70% of the males graduated. There was a wide gap in the graduation rates of different ethnic groups, with Hispanic and Native Americans graduating at lower rates (60.3% and 64.4% respectively), while White and Asian rates were nearly 81% and 85.2 % respectively. An appendix contains a high school cross reference with data by school. (SLD)