The time capsule came with strict instructions that it cannot be opened until 2031 and is being stored in the Founders' Room in the meantime.
The new time capsule was put into the renovated Anna Stuck Performing Arts Centre on Wednesday by Robin Oliver, one of builders from Gemco Construction who found the original time capsule, headmaster Trevor Barman, head boy Oliver Kersjes, and deputy head boys Angus Scott and Archie Absolum.
It contains a 'letter to my future self' by all 2020 Hereworth students as well as a current boy's school blazer and jersey to be compared to the future uniform at the time of opening.
The new capsule can be opened in 30 years' time.