Weather
If enough primary school children stand together and chant whilst looking at the sky, they can actually control the weather. I know this to be true, because when it was raining, the whole school would stand looking out of the window chanting "rain rain go away, come again another day". When the rain eventually stopped, we marvelled at our success. The same effect was also occasionally observed with clouds.

Some masochistic children would claim they had more power than most and would stand outside on their own on a sunny day chanting for rain, which would result in them being punched. But the most dangerous abuse of our weather controlling powers occurred when the class would stand under the large Horse Chestnut tree during conker season, looking up into the branches and chanting for wind. As usual, it worked, and three children got black eyes. The tree was chopped down during the holidays, and so the school was saved from future hurricanes.
written by Os*ar *erry, approved by Matt

An earnest attempt was made to scientifically disprove the theory that you can be killed by lighting while standing under a large beech tree in a thunder storm. This was swiftly curtailed by Mr. Walters, who yelled at us to not be so bloody stupid and get inside.
written by Ga*et* W*nsla*e, approved by Ponky