Mrs Diana Rose, Headteacher of The Royal Masonic School for Girls in Rickmansworth Park, Rickmansworth.

"The best way to learn is to teach. If you can't explain something thoroughly to someone else, you don't know it. Learn a topic and then go through it with a friend who has studied the same topic.

"Choose a revision buddie who may be good at different subjects from you, so that you can learn from each other's strengths. If you can't find a co-operative friend, explain the topic out loud to an imaginary friend, or even a tame parent."