Some simulation does not include evaluation. This may be the case if the educator is attempting to decrease student anxiety and encourage spontaneity and risk taking during the scenario.  However, if educators are interested in evaluating simulation, they usually have a checklist of the skills they want to see the student use in the simulation. This checklist is commonly shared in advance with the students so they are clear of the expectations for the exercise. Trained observers watch the students in their interaction with the character and check off various skills as they are displayed. In medical school this type of evaluation is called an objective structured clinical examination (OSCE).