Norfolk-born Youngs, 36, who attended the private school near Holt, was appointed its head of performance sport in 2024.
He and Cole have hosted a podcast, For The Love of Rugby, since January 2024.
The 39-year-old will now support Youngs as part of the school’s Talented Athlete Development Programme, which aims to support pupils with technical coaching, strength and conditioning, and workshops in nutrition and psychology.
As well as Ben, his brother Tom Youngs and their father Nick, the school also counts Oscar-winning actress Olivia Colman and billionaire businessman Sir James Dyson among its alumni.
James Knight, director of sport at Gresham’s and former director of rugby at local club North Walsham RFC, added: “It is incredibly exciting to welcome Dan to Gresham’s.
“His outstanding achievement in rugby, combined with his dedication and expertise, will make a significant contribution to our sporting programmes.”
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