McIntosh played for McArthur High School in Hollywood, Florida. His senior year, the McArthur team went 9-1, winning the district championship and ending the regular season ranked in the top 5 of the Florida High School Athletic Association 5A Poll. Numerous of Damion's high school teammates went on to play in the collegiate ranks or professional ranks, including Anthony Kelly (Central Oklahoma), Brian Visalli (Concordia University- Wisc.), Dan Visalli (Holy Cross), Quentin Chandler (Cen. Conn.), Mike Jaeger (Mount Scenario), Tyrone Taylor and Jerome Taylor (University of Missouri), Jason Brown (Gettysburg), Wayne Smith (App State, CFL), among others.