Hi OrphanCrow!
This appears to be the latest HLC handbook (pdf download)
Firstly, I respect you, this is not personal and I know you have a strong medical interest.
What makes you think that this PDF is "the latest HLC handbook" ?
It is on a defunct website about home schooling that last references the 2013-14 school year
The PDF itself dates from Saturday 14 September 2013
The PDF apears to be purely rehashed Kingdom Ministry and Watchtower articles with cross-references, most recently from 2006, plus a couple of diagram, the only 'unique' thing seems to be the single page at the end from the 'Gale Encyclopedia of Medicine'.
There is nothing on the PDF to indicate any association with any 'HLC' etc etc.
I suspect that this is purely the work of an over-zealous person back in 2013 thinking they're being helpful by pulling together a few WT articles