There is no definitive list of questions to ask when choosing a school. First, gather as much information as possible about schools that meet your criteria in terms of location, age range, boarding provision (where appropriate) and whether they are single sex or co-educational. The school finder on the left hand side of this page can help you with this. It has links to IAPS member schools, most other schools will have a record on the ISC website (www.isc.co.uk) and all will have prospectuses.
For your short-list draw up a list of questions and arrange to visit the schools.
You might ask questions about:
This is not meant to be an exhaustive list but merely a starting point to help parents find a school in which their children will learn and develop.