Wikipedia:Articles for deletion/Armorial of schools in the United Kingdom
There are lots of detailed encyclopedias of heraldry and works such as https://www.google.co.uk/books/edition/The_British_Herald_Or_Cabinet_of_Armoria/c3EUAAAAYAAJ?hl=en&gbpv=1 this specifically include British schools. The topic therefore passes 
— user:Andrew, 09:32, 16 November 2020 (UTC)
Stance: keep
Cited policy: WP:LISTN (Wikipedia:Notability)