Brother And Sister Put Charity Quiz Together
The pair, who are members of Sanger House, spent a couple of afternoons during the holiday compiling 70 questions.
The quiz sheets will go on sale for £1 to raise money for Macmillan Cancer Support.
Bronwyn, who is in Year 10, said: "We just thought that we needed to raise more money for our House charity so we'll be going round selling the quiz sheets to the other Houses."
Ethan, who is in Year 8, said: "We looked through some books for the questions and then typed them up on the computer. We're hoping to raise between £100 and £150.
"I think it will be a fun activity for people to do - it will take their mind off their school work for a while and help raise money for Macmillan."
The general knowledge quiz includes a celebrity picture round and some science-themed questions.
The winner, who will be announced before the end of term, will receive a £10 gift voucher for a shop of their choice.
The quiz sheets will be available soon.