[1] A school was founded in Midhurst for poor boys in 1672 by local businessman Gilbert Hannam.

By 1944 it was classified as a Voluntary Controlled school, run by West Sussex County Council.

[4] In February 2006 the school seriously failed in an Ofsted report and was put into the 'Special Measures' category.

Source:[7] The school was based on an unusual campus in the north of the town, after several changes in recent years.

The local authority brought forward proposals in tandem with a consultation on amending the age of transfer in the area.

This led to a new academy school opening in the town, taking pupils from the age of 11.

[9] There was considerable opposition to these plans, and a group of local citizens of the Rother Valley, including many former and current students, formally questioned the plans for many reasons and questioned the fairness of the consultation procedure, citing a "rushed process", particularly considering length of Midhurst Grammar School's history.

[10] Midhurst Grammar School closed on 19 December 2008, with a ceremony taking place in the former River Site Hall, ex-staff, ex-students as well as many of the current staff and students were present as Scott Ind & Chloe Oram delivered the closing speech as last Head Boy and Girl respectively.