I thought it would be worthwhile posting a few images that show the process of designing a logo. None of the following designs are the final identity (I will add a link to the school's website as soon as it's published) but they do show the progression from original to finished designs.
The original, very basic logo.
A very early attempt at refreshing the logo. The brief was to keep the Bishop's mitre, keys and strapline.
A bit more developed with colour added.
Taking the shield shape I developed the logo in Adobe Illustrator trying different colour options and ways to display the strap line. I also experimented with dropping the original crossed keys motif.
I settled on three final logos in different shapes and colour-ways. These were then sent to the client.