Compare to graduation rate of traditional colleges: https://nces.ed.gov/fastfacts/display.asp?id=40
"The overall 6-year graduation rate for first-time, full-time undergraduate students who began seeking a bachelor’s degree at 4-year degree-granting institutions in fall 2012 was 62 percent. That is, by 2018 some 62 percent of students had completed a bachelor’s degree at the same institution where they started in 2012. The 6-year graduation rate was 61 percent at public institutions, 67 percent at private nonprofit institutions, and 25 percent at private for-profit institutions. The overall 6-year graduation rate was 65 percent for females and 59 percent for males; it was higher for females than for males at both public (64 vs. 58 percent) and private nonprofit (70 vs. 64 percent) institutions. However, at private for-profit institutions, males had a higher 6-year graduation rate than females (26 vs. 25 percent)."