I agree, and said as much:
“2 days might be a bit of a stretch in terms of time unless you have a relative of neighbor close by/checking in on them”
If they were completely on their own with no one checking on them at all for 2 days, that is definitely getting into a grey area.
However if they arranged for someone (neighbor, relative) to pop in and check in on them, I don’t think 2 days is something that is worthy of anything. I don’t think I’d personally do that, but I don’t think its endangerment.
I was just agreeing and giving an example ;-).
It seemed from the article that no provision was made for any supervision of the children until the boy told a teacher they’d been left alone. At that point, a relative was contacted to watch over them.