Olympic gold medallist Jessica Ennis will be at Chesterfield College later to open a new building.
The heptathelete will open a new reception and learning centre area where pupils can study, eat and socialise.
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A large tent has been put up around the area while investigations continue.
The kind gesture touched the hearts of many who shared and retweeted words of support for the officer on Twitter.
Two workers were forced into a back office as the robbers tried to force their way into a safe, police say.