Morrow High School is the easternmost secondary school in Clayton County, Georgia, United States. Part of Clayton County Public Schools; it is located in Ellenwood at 4930 Steele Road. The school's teams are known as the Mustangs. Middle schools generally associated with Morrow High are Morrow Middle School, Adamson Middle School and Rex Mill Middle School.

Clayton State University is the nearest post-secondary school, though some college-bound students enroll at the University of Georgia, Georgia Southern University, University of West Georgia, Georgia Gwinnett College and Georgia State University. Recent students have also attended Stanford University, Duke University, Yale University, Brown University, Embry-Riddle Aeronautical University, Massachusetts Institute of Technology, Georgia Institute of Technology, Savannah School of Art and Design, and Morehouse College.

In 2022, the new Morrow High School $80 million campus was recently completed just east of the current location with a brand new district stadium and basketball arena. It will be the largest and most expensive school built in Clayton County Schools.

• Future Business Leaders of America
• Student Government Association
• Anime Club
• Beta Club
• Color Guard
• DECA
• Drill Team
• Eco-Club
• French Club
• Step Team
• Latin Club
• Latinx Student Union
• Orchestra
• Marching band
• Mock Trial
• Multicultural club (Diverse 4 Life)
• National Honor Society
• Student Council
• Technology Student Association
• Elite Scholar's Club
• Spanish Club

In 2018 one student received the Horatio Alger State Scholarship, the Nancy Penn Lyons Scholarship, and attended Stanford University. In 2019, another student graduated and went on to attend Duke University. In 2022, another student graduated and went on to attend the University of Pennsylvania.

Some recent Morrow High School students have received the Gates Millennium Scholarship (GMS) founded by the Bill & Melinda Gates Foundation. In 2006, two graduating seniors received it, one of whom went to Massachusetts Institute of Technology, and the other to Georgia State University. In 2007, three graduating seniors received the scholarship, and went on to Yale University, the University of Georgia, and Clayton State University, respectively. In 2008, two more students received the award, making it three consecutive years that the school had students receive full funding for any college of their choice.

• Bob the Drag Queen - winner of season 8 of Rupauls Drag Race; Class of ‘04
• Jeb Flesch - former professional football player
• Andre Hastings - former professional football player for the Pittsburgh Steelers and New Orleans Saints; Class of '90
• Jamal Hill - professional football player for the Houston Texans
• Karin Slaughter - crime writer; debuted with her novel Blindsighted

• Morrow High School
• Clayton County Public Schools#Loss of accreditation