 So what will you choose? As you make choices about the future, the military can be a resource for information to help bring a fulfilling path into focus. A public service message from the Department of Defense. To learn more, visit todaysmilitary.com. Not completing high school is more of a social thing than it was an academic thing. Even though all these years have passed, I still had that longing to have my diploma. At age 30, Carissa finished her high school diploma. If you're even considering getting your high school diploma, you can do it.