Watford Grammar School for Boys is an 11–18 boys partially selective academy in Watford in Hertfordshire, England. The school and its sister school, Watford Grammar School for Girls, descend from a Free School founded as a charity school for boys and girls by Elizabeth Fuller in 1704.

Aldenham School is a co-educational private boarding and day school for pupils aged eleven to eighteen, located between Elstree and the village of Aldenham in Hertfordshire, England. There is also a preparatory school for pupils from the ages of five to eleven. It was founded in the late sixteenth century by Richard Platt.