As an independent school, Hill House is inspected by the Independent Schools Inspectorate, which is licensed by the Department of Education and regulated by OFSTED. The most recent inspection report was published in 2016. In the 9 categories inspected by ISI, Hill House was given the top grade of Outstanding in 7 categories, and good in the remaining 2 categories.
In November 2018, ISI completed a Regulatory Compliance Inspection, the main purpose of which is to confirm that the school follows all necessary legal obligations laid down by the Department for Education. This includes management of various key areas such as the safeguarding of children, health and safety, the nature of the curriculum and the quality of the premises. The inspection found that Hill House School meets the expected standards in all areas. The full report can be found below.