Carre's Grammar School is a selective secondary school for boys in Sleaford, a market town in Lincolnshire, England. Founded on 1 September 1604 by an indenture of Robert Carre, the school was funded by rents from farmland and run by a group of trustees. The indenture restricted the endowment to £20 without accounting for inflation, causing the school to decline during the 18th century and effectively close in 1816. Revived by a decree from the Court of Chancery in 1830, new buildings were constructed at its present site and the school re-opened in 1835. Faced with declining rolls and competition from cheaper commercial schools, Carre's eventually added technical and artistic instruction to its Classical curriculum by affiliating with Kesteven County Council in 1895. Following the Educatio