sentences:  In 1925, The Oratory Preparatory School was established with just four boys, at Rose Hill House, a Georgian-style country house in Emmer Green, less than a mile away from the main school.Its first Headmaster was Father Sebastian Ritchie, and by 1930 its numbers were up to thirty boys.By 1941, the school, based at Caversham Park, was taking boys only between the ages of six and thirteen.