How competitive are the Marine Corps ROTC scholarships? I currently have a 3.5 gpa a 29 ACT captain of my track and cross country teams have been running for all 4 years of high school. I have a job which I work during the school years of 10-20 hours a week and in the summer 25-35 hours. I have a ton of leadership positions within my school, and I want to major in Mechanical Engineering. Would I be competitive?