What is the relationship between Jane Eyre and miss scatcherd?

Jane Eyre dislikes Miss. Scatcherd as she thinks she is cruel to Helen Burns and treats her unfairly. Burns is a bright pupil - one of Miss. Scatcherd's brightest in English History - but Miss. Scatcherd does not praise her, instead beating her with a pile of sticks. Why she does this, it is unknown, but probaby Miss. Scatcherd does not wish to praise Burns as it could make her proud and the aim of the school is to turn out demure, quiet, sensible girls.