Well, inventing ad-hoc excuses is the usual way to prop up untenable theories, and when the excuses border the unfalsifiable (inter-dimensional beings, demons...) they're even better! What the proponents of this approach forget is that for any...
They were shown the movies during class time so I presume there was no way to avoid it. Perhaps the teacher(s) thought it was an interesting topic to discuss since the kids were showing an interest. I doubt the school was concerned about how it...
Here's one showing the distribution of forest, or as the chart says, "woody biomass". I'm going to guess that the "distribution of tree stumps that look spooky at night" looks much the same.