This series focusses on the headmastership of Rev Edward Vere Hodge (1879-1902) and contains items relating to the life at School in the late19th century, its staff and pupils. The series contains some of the earliest photographs of Oakham School's collection.

This series focusses on the headmastership of Graham Smallbone (1985-1996) and contains items relating to the life at School in the 1980s and 1990s, its staff and pupils.

This series focusses on the headmastership of John David Buchanan (1958-1977) and contains items relating to the life at School in the 1960s and 1970s, its staff and pupils. The bulk of the series consists of books, publications, letters, speeches and sermons written by Mr Buchanan himself.

This sub-series relates to the history of the Cadets at Oakham School since 1910. The bulk of the collection is made of photographs of inspection throughout the 20th century.

A letter from Paul Spicer to Joe an Angela Spence regarding his visit to the school and the rededication service.

This series focusses on the headmastership of Oliver Richard Sylvester Bull (1977-1984) and contains items relating to the life at School in the 1970s and 1980s, its staff and pupils. One of the files relates to Michael Stevens as Acting Headmaster for two terms in 1985.

Programme, correspondence and letters regarding the visit of Mr Justice Owen to Oakham to hold a Crown Court in the castle

This series focuses on School House pupils and staff in the 20th century. Most of the series is made of house photographs, various informal photographs as well as records books and punishment books.

This series relates to the History of Shooting at Oakham School. The collection is made of team photographs, score books and ephemera relating to successes at Bisley. The collection spans from the 1950s to 1980s.

This series focusses on the headmastership of Grosvenor Talbot Griffith (1935-1958) and contains items relating to the life at School in the mid-20th century, its staff and pupils.