Quadrangle

The main quadrangle buildings were opened on 21 October 1926. They were the most extensive addition to the school up until that point, and to this day they comprise a significant proportion of the school buildings.

In attendance at the opening ceremony were:

• Sir Archibald Weigall, high sheriff of Lincolnshire
• Admiral Earl Jellicoe of Scapa
• Tom Kitwood, deputy chairman of the governors.

Due to the availability of these new classrooms, the Big School was increasingly used for assemblies rather than classroom teaching after 1926.

The large quadrangle formed by these extensions was later bisected in two by the Link Block in 1988. The Assembly Hall was connected in 1958, along with the second Dining Hall in 1984.