More than 1,500 pupils have been sent home from the William Howard School in Brampton after problems with the water supply.
Engineers from United Utilities have been working with local contractors to try and establish the fault.
Pupils were sent home after after registration at 9.20am.
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The 46-year-old, who won five trophies during his playing days with the Foxes, has succeeded Pierre de Bruyn in the role at Grace Road.