Schools will compete against each other to see who can raise the most money for a hospital unit in Newcastle.
The Bubble Unit is running the challenge and, as Denise Roberts explains, all of the money raised by the nine schools taking part will go towards funding research for the Bubble Foundation UK.
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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