We have some of the strongest dialects in the country, but that isn't stopping a head teacher from Teesside taking one of them on.
Sacred Heart Primary in Middlesbrough has written to parents asking them to correct their children's English.
They say that telling pupils when - and when not - to use their dialects, will help them in the future.
Watch the full report from Dan Ashby below.
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Emma Jesson brings you Sunday night's forecast
Wet and windy spells, interspersed with drier interludes this week. Breezy with wintry showers, variable temperatures and a weather warning
Mostly cloudy, some bright spells, rain on and off and blustery. Milder temperatures than on Saturday