Calculating reach for STEM engagement activities

In order to know the impact and value of STEM engagement activities we need to know who we are impacting on, and how many people we have reached. Monitoring and reporting reach is generally a requirement for funders or other stakeholders, but it is not always as simple to measure as it might appear and reach figures are likely to be inconsistent across different programmes. In this brief guide, we discuss some of the key considerations for understanding and calculating reach for school-based STEM activities.