This stat is also skewed due to most school districts creating new "alternative High Schools" where the students who can not complete a regular curriculum go to get a free ride. There is no mystery here. I have had students with attendance, discipline, and reading problems go to alternative school in my district and "FINISH' 2 1/2 years of credits in 3 months while going to school from 10 AM to 1 PM. The late start is due to their inability to get out of be due to drug use. Statistics don't lie, but statisticians do. One more dishonest lie perpetuated by the Education Community to justify stealing more from the taxpayers. I teach, but I am not a union teacher due to the nature of what I teach. The teachers' union is culpable.