The evaluation measures can be mapped to each stage of a Logic Model. This would help “trace” the relationship between inputs, outputs, outcomes and impacts. For example:

  • Input – a measure of the resource committed to developing and carrying out school educational visits
  • Output - a measure of the number of school visits performed
  • Outcome - a measure of change in student perceptions of rail trespass risk
  • Impact - a measure of change in number of trespass events involving young people 

If the evaluation aims to assess the process, this will require additional “measures” related to stakeholder feedback on the implementation process and a comparison of intended versus actual implementation. 

If there is a potential for unintended impacts, then measures of displacement and substitution may be required.  This is referred to in the Impact evaluation: Before and after comparison section.

More information and advice on evaluation measures is provided below.