Evaluation can be carried out by the project team or by an external consultant.

Conducting your own evaluation gives you direct access to participants' responses. This can give you a deeper insight into how the project is working. It also allows you the flexibility to modify the evaluation as the project develops. If confidentiality is an issue, then internal evaluation may be the best option.

External evaluation offers a measure of independence which can add weight to the validity of the evaluation. It also allows you to bring in specific skills and resources which may not be available in the project team.