The school was formed in 1974 when the Bentley Grammar School and the Fynemore School merged. Both sites were used until 1998, when the Fynemore School site in Silver Street was given up and more buildings added to the Wessington site, and existing ones improved. The oldest Calne school was founded in 1557 by Walter Fynemore of Whetham. He gave an annuity of 40 shillings towards the foundation of a free school to be established within the Borough of Calne. The money devised was to be used for the education and bringing up of ten children of the poor. Various other bequests were made during the 16th century and the school's revenue was further augmented by a grant from borough funds. The school did not possess a building until 1830; lessons had been held in a disused malthouse until then. Subscriptions from residents and a few wealthy landowners were collected and a site on The Green in Calne town was given by the Marquis of Lansdowne. The school became the Boys' National School. In 1856 another site on The Green was occupied by the Girls' National School, built at the expense of a Mrs Wetherall of Patford Street, Calne. The second-oldest school in Calne sanctioned by the Charity Commissioners was the Bentley Grammar School founded in 1663 by the trustees under the will of John Bentley of Richmond, Surrey. Although he had no intention of establishing a school in Calne, three of the trustees under his will had an association with the town. The newly erected school remained until 1833. In 1894 the Charity Commissioners reorganised the school and modernised it. In 1901 it was combined with the Technical Institute which had also been established in 1894. Both schools continued to expand into the 20th century. Bentley Grammar School moved onto the present site in 1957 and the Elementary School was built at the Wenhill Lane site in 1930. The two schools became John Bentley Comprehensive School in 1974 and remained a split site until the North Wing site was sold and the school became a single site in 1998. The school's Language College status was formally recognised by an official opening by the Queen in 2001, by which time its name was The John Bentley School. The school also gained training school status in 2001. In recognition of its status as "a good school with many outstanding features", the school was invited to apply for academy status in 2010. The school joined Royal Wootton BassettAcademy Trust in April 2019 and was renamed Kingsbury Green Academy in September 2019. Its name reflects the siting of National Schools in the 19th century at The Green in the Kingsbury area of the town.
Campus and facilities
Set in the Wiltshire countryside, the school has 13 science labs, a design and technology complex with a focus on resistant materials, digital media, computer-aided design, textiles, food, graphics and ICT. It has three fully equipped drama studios and three purpose-built music rooms with practice rooms for instrument tuition. There are data projectors and interactive whiteboards in all departments. It has a sports hall, gymnasium and 33 acres of sports fields, as well as the use of the White Horse Leisure Centre, which has seven tennis courts. There are art and design studios for painting, drawing, fabric printing, ceramics, computer-aided design and modelling, together with a photography dark room and processing facilities. There is a cafeteria with an outdoor covered eating area, gardens, an on-site nursery and a purpose-built Sixth Form Centre.
In the 2002 inspection, the school was rated "good overall". The school maintained this rating at the 2007 and 2010 inspections. On 6 June 2013, in the first inspection since becoming an academy, despite the bar having been raised in the way schools are judged, the school continued to maintain its high standards; however, its rating dropped to "requires improvement" in 2018.
