Delight in the detail. The National Curriculum metadata standard allows websites to be tagged with detailed descriptions that link with specific statements in the National Curriculum. This means that users coming to your site have come from a specific key stage and subject with a precise query in mind. So if your site covers just one small aspect of the National Curriculum, it may well fill a gap. It might even become the definitive online resource for that aspect.
Reference is a resource.
If your site is essentially a reference site, or if you are a learned society or museum wanting to showcase information, this can be valuable background reading or raw material for teachers. Although this site will welcome lesson plans for teachers or resources to be handed out to pupils, reference resources are also an important part of its remit. Resources are checked for quality. BECTa are working with subject associations to validate the sites against set criteria. More information about NGFL criteria and badging is available here .