From 1 July 2015 all schools are subject to a duty, under section 26 of the Counter-Terrorism and Security Act 2015, to have “due regard to the need to prevent people from being drawn into terrorism”. This duty is known as the Prevent Duty for Schools. Further information for parents/carers can be found in this information booklet
Information about Prevent in North Somerset can be found at http://www.n-somerset.gov.uk/my-services/community-safety-crime/prevent; this includes contact details of how to report concerns, as well as links to allow you to report online terrorist and extremist materials.
You can find more information at https://actearly.uk/ with lots of advice, support and signs to look out for.