 Carre 's Grammar School was founded on 1 September 1604 by way of an indenture between Robert Carre , a member of the Carr or Carre family , and several local gentlemen . Carre granted 100 acres of agricultural land in Gedney to these men , who held the land in trust as <unk> . The lands were estimated to be worth £ 40 per annum and the indenture stipulated that £ 20 of this would be paid to the school master , while the remainder would be for the benefit of the town 's poor . The indenture stated that the school was to provide for " the better education of the Youth and Children born or inhabiting with their parents within New Sleaford , Old Sleaford , <unk> , and <unk> ... and in <unk> , North <unk> , South <unk> , <unk> , <unk> La Thorpe and <unk> . " It is not known whether there was any other school in the town prior to the foundation of Carre 's , although the indenture appointed Anthony Brown , already a schoolmaster , as the master ; it thus seems likely that Carre already operated a school and his indenture codified pre @-@ existing arrangements . 
