This series focusses on the headmastership of Dr John Doncaster (1808-1846) and contains items created by the headmaster himself as well as items relating to the life at School in the early 19th century and Old Oakhamians, in particular James and Augustus Padley.

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 series focusses on the headmastership of Rev William Spicer Wood (1846-1875) and contains items created by the headmaster himself as well as items relating to the life at School in the mid-19th century.

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 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.