See how many K - 12 students there are with certain specific disabilities, and how many of those students drop out or graduate with a regular high school diploma. (edweek.org)
The G.E.D. has been around for a long time, too, meant as a second chance for dropouts and others who just never got around to completing a regular high school diploma «on schedule.» (educationnext.org)
Both measure the percent of public school students who attain a regular high school diploma within 4 years of starting 9th grade. (nces.ed.gov)