The House system is at the heart of life at Oundle. It is in the community of the House that most pupils find the confidence and sense of purpose that lead to fulfilment in the larger community of the School.

Junior day pupils in the First and Second Forms are accommodated in Scott House, sharing the generous grounds of The Berrystead, the junior boarding house for pupils aged 11 to 13. Together, the two Houses form a comfortable base for pupils to socialise before they move to the senior Houses.

Laxton House for day pupils caters for 160 pupils from 13 to 18 years of age, and is situated at the heart of the School, using buildings which were part of the original Grammar School foundation of Sir William Laxton.

The senior boarding Houses accommodate approximately 60 pupils, or roughly twelve pupils in each year group. The accommodation varies between Houses, with some pupils in bedsits in their first year; whereas others may share small dormitories and work in separate studies. All Sixth Formers are in bedsits, and all Upper Sixth formers are in single bedsits. Each boarding House has common recreation areas, a library, TV room, and kitchens for pupil use. In addition, all Houses have their own dining room where the members of the House sit down together for breakfast, lunch and supper.

The Houses are scattered throughout the town, and each retain their own individuality, whether fashioned by the Housemaster or Housemistress, its pupils, its architecture or location, whilst adhering to the philosophy of the School.