READ MORE: Kate Middleton was once mistaken as Prince William's assistant - and her response was hilariousLambrook does not tolerate any mistreatment of pupils and there are harsh consequences in place such as detention and even exclusion for those who do not abide by the rules. When Kate was growing up she reportedly suffered a miserable ordeal while studying at her all-girls boarding school Downe House in Cold Ash, Berkshire. “Being especially slender and a head taller than her peers, she stood out for the wrong reasons and was teased for being gangly and lanky,” Katie Nicholl, a royal correspondent and biographer, explained.