Thanks to Roger McGee who sent me a copy of the 1955 school brochure.
We have the 1947 version on this site and the 1961 / 2 version after it had become known as the City of Coventry Boarding school. This version, which has the same cover as the 1960's version was from 1955, two years before the school changed its name to City of Coventry Boarding School. However the content is different, especially the photos.
Here it is pdf form on Google drive - you can view it, expand it or download it free if you click back to google drive.