Name of Student: Muhammad Tahir Abdul-Jabbar Harkey. Supervisor: Professor Dr. Kareem Fattah Aziz. On the 22nd of October, Muhammad Tahir Harkey defended his Master's Thesis successfully in College of Nursing/Hawler Medical University-Erbil. Muhammad has studied the “Knowledge and Practices of High School Teachers Regarding Healthy Life Style in Erbil City/Iraq”. Furthermore, his thesis was accepted as a partial fulfillment for Master Degree in Nursing, and it was suggested to be awarded with Master Degree in his specialty.