This can be Played for Laughs by having a Book Dumb character make such an error so that a smarter character can spot and react to it.
Also see Didn't Think This Through, which is less about research failure and more about planning failure.
This is a particular instance where a story or character has somethinga statement, the depiction of somethingthat is so egregiously off-the-scale in terms of inaccuracy that anyone with a high school education (or less) and/or a cursory knowledge of the subject realizes the writers made the whole thing up.
Many of these will be Disaster Movies or Action Movies and will use state of the art computer effects to keep your interest.
If it's specifically math that is off, see Writers Cannot Do Math. The person to ask for information about the White House as a building would be a tour guide, which means that whoever decided he needed to talk to the class about it had their own failure.
Calvin: The planet Mercury was named after a Roman god with winged feet.
It has since been observed that the wasps may actually have been bees, re-occupying a disused hive structure.
Oak galls are formed when a gall wasp lays eggs in a tree's leaf buds and the larva will then develop while inside the gall.
Hundreds of bees were killed by council workers at an allotment site - after they mistook the insects for wasps.
Workington Town Council, which runs the Soapery Allotment site where the bees were found, has apologised for the incident.
Council workers were clearing a disused plot on Wednesday when they were allegedly attacked by the bees.
They then used a household wasp killer to destroy the insects.