A collection of reports and financial statements, and letters, related to the activities of Oakham School Enterprises Ltd (OSEL), spanning from 1978 to 1995.

This series focusses on staff leavers, including list of staff changes, invitations to Leavers' events and booklets celebrating staff's time at Oakham School

This series focuses on the boarding boys in Deanscroft, since its opening in 1948. The Headmaster himself was Housemaster, until 1971. Deanscroft boarding house was closed on Speech Day 1989, prior to its conversion into Stevens, a boarding house for girls. The boarding boys were moved to the newly built Haywoods House on Kilburn Road. The items include the complete set of house photographs and informal photographs showing boys around the house and on campus, as well as duty records.

This file focusses on letters sent/received by John Buchanan, chiefly during his headmastership (1958-1977).

This series focuses on the Day girls' house of Hambleton, founded in 1997. The main items are informal photographs of house events and house diaries, planning and detailing the house routine throughout the years.