The following text is from the original listed building designation:
CRANBROOK WATERLOO ROAD TQ 7736 SE (north west side) 10/303 - The Big School - II
School hall for Cranbrook School. 1883 by T G Jackson. Pink with orange brick dressings and dentilled cornices between ground and first floors and over first floor. Stone balustrade and pinnacles to plain tiled roof with large pilastered end stack to left, smaller end stack to right and stone gable parapets. Central cupola of 2 arched tiers with ogee cap and weather- vane. 2 storeys. 7 bays, the 2nd, 4th and 6th projecting with pilaster on both floors and carrying pediments above first floor against blank brick parapets. Large arched windows on first floor of three bays. Tall segment- headed windows on first floor of 3rd and 5th bays. Horizontal oval windows with swags above segment-headed windows on first floors of first and seventh bays. Segment-headed windows with keystones. On ground floor, one to each bay except two smaller onces in 6th bay and arched doorway with panelled door in first bay from left. All windows casements with transoms and mullions; rubbed brick decorative aprons below each. Interior: Arched braced crown post roof in Big School. Panelling.
Listing NGR: TQ7778936099

English Heritage, List of Buildings of Special Architectural or Historic Interest (Map). SKE16160.