The study also relates the index to changes in student retention in the 9th grade and to changes in high school completion rates over the same period. (cepa.stanford.edu)
The authors explain that changes in birth and arrest rates among teens may also have played roles in increasing rates of high school completion. (educationnext.org)
And none of these «new generation» studies indicate any positive effects on high school completion. (educationnext.org)