Shapwick School is accredited to an ISC Association* but as a special school was last inspected under Section 347 by Ofsted. The most recent report can be accessed on the Ofsted website.
*The Associations are:
The Council of British International Schools (COBIS)
The Girls' School Association (GSA)
The Headmasters' and Headmistresses' Conference (HMC)
The Independent Association of Prep Schools (IAPS)
Independent Schools Association (ISA)
Society of Heads of Independent Schools (SHMIS)