This collection focuses on major events that have occurred to the school and its pupils. This includes the Quatercentenary celebrations and the school's reaction to the COVID-19 pandemic.

The Quatercentenary celebrations compromised of several events including the visit to the school by Queen Elizabeth II and Prince Philip, Quatercentenary ball, and special productions to celebrate the recent opening of the Queen Elizabeth Theatre.

There is a detailed series on the school's Speech Day which includes a comprehensive list of programmes and award winners from the ceremony.

There is a excellent record of items showing how the school reacted to the COVID-19 pandemic. There is general communication to parents and staff, information on the structure of face to face and distance learning teaching, and also an illuminating collection of photographs taken by Ms. Fernandez in 2021.

Stretching back to the headmastership of Dr. Doncaster, this collection comprehensively covers the correspondence, publications, photographs and other ephemera of the headmasters of Oakham School up to the present day. For many of the headmasters, correspondence and rolls calls are a significant theme in their series.

This collection also contains an excellent record of speeches and sermons given by G. Talbot Griffiths and John Buchanan.

The final series on reports covers the headmaster's, deputy headmaster's and registers writings on the state of the school, including topics such as building and estate development, admissions, the curriculum, examination results, and Old Oakhamians.

This series focusses on the headmastership of Henry Price (2019-today) and contains items relating to the life at School in the 2020s, its staff and pupils.

This series focuses on the boarding girls in Rushebrookes house. It was named after the first School Headmaster, Robert Rushbrooke. The first girls moved in in the Spring term 1980 but the building was officially open only on 22 November 1980. This series contains items related to the daily life of the girls in school and in house, as well as house photographs, mostly from the 2010s.