Meet the new president of the Girls' Schools Association, Jane Prescott, an ex-soldier turned head who is cautious about school rules but passionate about single sex education

Jane Prescott has a mantra that she believes has served her well throughout her career as a headmistress.

“Rules are for the guidance of wise men, and the obedience of fools,” she says. “You’ve got to be careful with the rules that you have – that they are appropriate, that everybody understands the rationale behind them.”