I got lucky and was able to get in as a stand-by for the always-fully-booked classes offered by DLNR this week.
I can't say enough good things about DLNR's Hunter's Education program and highly recommend it. I went in expecting to just get a hunters license and came away with a deep appreciation for animal habitat and wildlife conservation work in Hawaii by hunters and folks in the DLNR.
I encourage those here who are into firearms to check out the Hunters Ed program.
To get a standby seat, go at 2:00 or 2:30 pm of the first day of a booked class and wait till 4:30pm to get on the standby list. If enough people don't show up, you will be able to get in as long as here are seats available in the classroom.