Sarah (Last name unknown) is a character who appears in the first book in the series as well as Series 1 of the television adaption. She is a pupil at St Champions school where she is also one of the School Prefects, third in charge after Rose and Jeff.

Along with the other prefect, Sarah controls the student body enforcing the commands and rules set by The Headmaster and disciplining anybody who brakes the rules or steps out of line in anyway.

If The Headmaster's plan would have succeeded, she would have been allocated 50 children, split up according to age and also in charge of Labour Camps. Like the other prefects and the other hypnotised students, Sarah is likely to have become un-hypnotised after the Headmaster's plan failed and started behaving normally. It is unknown what happened to her after the Headmaster fled and if she was accepted or ridiculed by her fellow classmates. She is played by actress, Candace Hallinan