I tried looking for Alia Wong's article concerning the DOE report, but had no luck.  These are close to what I was looking at though:
http://arch.k12.hi.us/PDFs/state/superintendent_report/2015/2015SuptRptFinal.pdf
see table 17
and
http://arch.k12.hi.us/PDFs/state/superintendent_report/2015/2015AppendixCDataTbl.pdf
See table 8

Looks like there is consistently a 14% dropout rate in the public schools.