Children attending Lexington School as Kindergartners must be five by September 1st. Children who turn five between September 2nd and December 2nd may register for Transitional Kindergarten. Parents must bring the child's birth certificate, immunization records, and proof of address into the office in order to register. When a student is transferring from another school, it is helpful if the parent brings the child's last report card and test scores. If the child has been in a special program, that information is helpful as well.