“sounds like a kid that hated his upbringing”
True, but why wouldn’t he have taken it out on his parents. Why wouldn’t he just off himself off. Instead he attacked the missionary school where apparently he might have “worked for” but not “belong to” where they wouldn’t let him stay the night then he went towards the mega church.
Probably something personal. And the black trenchcoat may just indicate that he is another troubled kid that hates the world and identified with columbine. Certainly seems odd for a homeschooled kid.