The definition of an exemplar is person or thing that is considered as a pattern to be copied. An example of an exemplar is a person that others try to imitate, such as Michael Jackson. An example of an exemplar is a copy of a manuscript.
A stakeholder in education is anyone who has an interest in the success of a school or school system. They are the parties that are either directly or indirectly affected by the success of an education system.
A stakeholder is anyone who has an interest in your project or will be affected by its deliverables or output. It is important to understand the values and issues that stakeholders have in order to address them and keep everyone on board for the duration of the project.