Crafting Post-Mortem Messages

This is a big disturbing. They're turning the ash from cremated corpses, presumably your loved ones, into pencils. I imagine they take the normal wood, and then infuse the graphite with the ash, or just compress the ash into some graphite-like substance.
I understand why someone would want to do this, but as a teacher, I would very much disprove of having a paper written in dead mans body handed in to me for grading. I would also not accept papers written in blood or urine or any other bodily fluid. (Ok, so I'm not a teacher yet, but I'm making a point here).