Why is it important for an educator, especially an educational leader, to understand the policy making process?

Policy Definitions

Watch:
https://cdnapisec.kaltura.com/index.php/extwidget/preview/partner_id/2167581/uiconf_id/39959791/entry_id/1_p95iyzzl/embed/dynamic

Book:
Fowler, F. C. (2013). Policy studies for educational leaders: An introduction (4th ed.). Boston, MA: Allyn & Bacon

Define education policy and give an example of policy developed at the federal, state, and local level. Why is it important for an educator, especially an educational leader, to understand the policy making process?