Kesteven and Grantham Girls' School, Sandon Road. Buit in 1911 by H. H. Dunn; extensions in 1956-57 by the county architect, J. W. H. Barnes; laboratory block and assembly hall 1984-86 by the County Architect's Department. {1} The original 1910 block of the school that faces Sandon Road is listed and for the full description of this listed building please refer to the National Heritage List for England. Kesteven and Grantham Girls’ School opened in 1910 as a fee-paying girls’ grammar school. It was designed by Herbert Henry Dunn of Lincoln and is a good example of an Edwardian grammar school. It was equipped with large, well-lighted classrooms, laboratory, art rooms, assembly hall, dining room and school kitchen and had ‘a very healthy situation in high ground and in open country’ with playing fields, and space set apart for school gardens. The original setting has been considerably built up with extensions and additions. To the north is a large extension built in 1956-57 by the county architect; and to the south an extension containing a laboratory block and assembly hall built in 1984-86 by the County Architect’s Department. The original 1910 building is in red brick with stone dressings while the roof is covered with plain tiles and has exposed rafters at the eaves. The school has an east-facing main range, approximately rectangular in plan, with short wings to the north and south containing classrooms and the former library respectively. The single-storey, central entrance block is flanked by the former headmistress’s room on the left and the reception on the right, and leads to the double-height hall. The recessed central range of the main front has a pitched roof which is surmounted by a louvred lantern with a small dome. Above the main door, the parapet rises to a point and contains a carved stone relief depicting a forest with the school crest in the centre. A banner above the crest is inscribed ‘COUNTY KESTEVEN SCHOOL’ and a banner below is inscribed ‘AD GRANTHAM 1910’. Some of the original cast-iron rainwater goods survive with ‘K.C.C’ on the heads. Internally, the original building has also undergone some alterations, notably the change of use of some of the rooms, resulting in the removal of the library and science laboratory fittings, nevertheless, the plan form and internal fittings remain substantially intact. Some internal doors have been replaced with fire doors and some classrooms have inserted ceilings. The gallery and corridors have parquet floors, whilst the hall and classrooms are carpeted, possibly covering parquet floors. The school’s most famous pupil was Margaret Thatcher (1925-2013), the first female British Prime Minister, who received her secondary education here between 1936 and 1943. {2}