This collection focuses on the administrative side of the school including admissions and trustees.

There is a rich collection of admissions books dating back to the 19th century alongside detailed notes of Trustees' committee minutes and development plans.

School inspections undertaken by external bodies are represented in this sub-fond and include some of the 19th century schemes which helped to found the school as one independent from Uppingham.

ADM/4 contains policy documents outlining the health and safety measures in the school.

This series focusses on the headmastership of Walter Lee Sargant (1902-1929) and contains items relating to the life at School in the early 20th century, its staff and pupils.

This file focusses on various prospectuses published under the headmastership of Walter Lee Sargant in the early 20th century.

This series focusses on the headmastership of Francis Cecil Doherty (1929-1935) and contains items relating to the life at School in the early 20th century, its staff and pupils.

This file focusses on admission prospectuses and various publications in the 1930s.

A prospectus promoting studying at Oakham School in the 1930s. Contents: Staff; Admission; Work; Fees; Optional Payments; Absence & Remission of Fees; Health; Entrance Scholarships; Other Scholarships & Exhibitions; Buildings; Boarding Houses; Holidays & Hours; Games & Hobbies; School Societies; Expenses; Clothes List.

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.

This file focusses on admission prospectuses published throughout G. Talbot Griffith's headmastership.

A prospectus promoting studying at Oakham School in 1951. Contents: School History; Trustees and Staff; Curriculum; Boarding Houses; Clothes and Uniform; Health; Sports, Activities and Societies; Fees; Scholarships; Day Boys. Seven double-pages A to E. Enclosed is a list of staff (F).

A prospectus promoting studying at Oakham School in 1946. Contents: Foundation & History; The School today; Situation & Surroundings; Trustees; Premises & Equipment; School Terms, Holidays, Timetable; Chapel Services, Religious Instruction; Curriculum; Libraries; Reports; Boarding Houses; School House, Wharflands, Deanscroft, The Junior House, Hodge Wing; Clothes; Diet & Tuck Boxes; Health; Absence & Leave; Games; Physical Education; J.T.C.; Scouts; Activities outside the classroom; Entry, Fees, Remission of Fees for absence; Optional Payments, Extras; Pocket Money; Scholarships; Leaving Scholarships; Notice of leaving; Expenses; Appointments with the Headmaster; Day Boys; Publications; Old Oakhamian Club. Seven double-pages A to G. Enclosed are two trustees and staff lists (H and I) in 1946 and 1949.