The Sleaford Joint Sixth Form is a collaboration of the co-educational sixth forms of St George's Academy and the Robert Carre Trust, comprising of Carre's Grammar School and Kesteven and Sleaford High School.

Schools working together to increase student choice, enlarge opportunities and enhance the academic and personal success of their students. Sleaford Joint Sixth Form is the collaboration of secondary schools in Sleaford which aim to achieve all those things for their Post 16 students.