Carrying out effective evaluation of your project is important. It helps you to measure it’s impact, but when it’s done well can also help you to plan your project; the evaluation needs to start at the beginning of the project. The way in which you decide to evaluate your project will depend on the methodology you’re using, who you’re engaging with, and how long-term it is.
Here are some great links to read through while you consider evaluation in public engagement:
This toolkit (which can be downloaded) is designed to make it easy to evaluate the design, execution and impact of public engagement with research
This gives a good overview of why evaluation matters, and how to carry it out
Resources to help create impactful engagement