Career Readiness
Do I Need a Diploma to Join the Military?
Read time: 5 minutes
Updated September 2026
Do you need a high school diploma to join the military? Perhaps the better question is: “Is it worth it to finish high school?” For potential recruits exploring their career opportunities, education plays an important role, especially when meeting the eligibility requirements of the United States Armed Forces.
If you’re here wondering whether finishing high school or earning a G.E.D. (General Educational Development) is necessary for military service, you’re not alone. Many individuals face challenges balancing family needs, work, and education, but a high school diploma can expand your career opportunities, both in the military and beyond.
Military Enlistment Requirements
One industry that many are drawn to is the United States military. The US military, including the Army, Marine Corps, Navy, Air Force, Coast Guard, National Guard, and Space Force, offers U.S. citizens and legal residents a variety of career options. Military personnel defend the country in ways that were previously unimaginable. A job in the armed forces can provide employees with a great sense of purpose and offer huge rewards. Depending on how far you go in your military career or what branch you join, it can provide great benefits.
Each branch offers many possibilities, however, each has standard enlistment criteria for potential recruits. To be selected for service, you must meet some basic requirements:
- Physical Requirements: Recruits must pass a medical exam and meet the standards set by the Military Entrance Processing Station (MEPS).
- Mental Standards: Recruits must achieve a minimum score on the Armed Forces Qualification Test (AFQT), a component of the Armed Services Vocational Aptitude Battery (ASVAB), which measures arithmetic reasoning, paragraph comprehension, and other critical areas that helps determine which jobs a person can do after enlisting.
- Age Requirements: Typically, recruits must be between 17 and 39 years old, with parental consent required for those under 18.
- Citizenship: Applicants must be United States citizens or legal permanent residents.
Education and Testing Requirements to Join the U.S. Military
When it comes to education, most branches have the same requirements. Currently, most branches require a high school diploma or a general equivalency diploma (G.E.D.). Some accept G.E.D. holders on a case-by-case basis, often requiring additional qualifications like 15 units of college credit and a higher score on the Armed Services Vocational Aptitude Battery (ASVAB) test.
Some of the armed services limit the number of accepted G.E.D. applicants because the military service dropout rate is higher for those with a G.E.D. For this reason, GED holders are often considered Tier 2 recruits while those with a high school diploma are Tier 1.
The U.S. Marine Corps (USMC) is one branch of the military that does not accept a G.E.D. at all. For a look at the education requirements, see the table below.
| Branch | Diploma | GED | Age | Status |
|---|---|---|---|---|
| U.S. Air Force (USAF) | Yes | Yes, with more requirements | 17-42 | U.S. citizen or a legal permanent resident |
| U.S. Army (USA) | Yes | Yes | 17 – 42 | U.S. citizen or a legal permanent resident |
| U.S. Coast Guard (USCG) | Yes | Yes, with more requirements | 17 – 42 | U.S. citizen or a legal permanent resident |
| U.S. Marine Corps (USMC) | Yes | Yes | 17 – 28 | U.S. citizen or a legal permanent resident |
| U.S. Navy (USN) | Yes | Yes | 17 – 41 | U.S. citizen or a legal permanent resident |
| U.S. Space Force (USSF) | Yes | Yes | 17 – 42 | U.S. citizen |
Note: All branches require a minimum qualifying score on the ASVAB test
While each military branch has its own educational requirements, all branches emphasize the importance of a solid educational foundation to ensure military personnel can meet the mental and physical demands of their roles.
Why a High School Diploma Matters
Having a high school diploma places you in Tier 1, the highest category for potential recruits. G.E.D. holders, categorized as Tier 2, often face additional barriers during the enlistment process, such as:
- Meeting stricter eligibility requirements.
- Competing for limited G.E.D. slots during recruitment.
- Facing higher dropout rates during basic training and technical training.
Beyond enlistment and active duty, a high school diploma provides long-term benefits for career growth.
Military Career Growth Possibilities
The U.S. military has a defined hierarchy that provides a clear way to grow as a military professional. As an enlisted soldier, you may decide to grow in your career and strive to become an Officer. Officers are personnel who have gained knowledge and leadership skills during their career as an enlisted officer. They are leaders and trainers who manage and oversee a number of different military functions. There are many opportunities for those who reach the rank of Officer, but it does have some requirements. Officers must have training, experience, and a college degree or bachelor’s degree.
It’s Never Too Late to Return to School
Whether you’re considering joining the military or simply want to expand your career opportunities, earning a high school diploma is the first step toward success. While the opportunity is always there, the longer you wait, the more challenging it may become to return to school. Luckily, there are alternatives out there.
A million students or more drop out of high school each year but few of them return. Our accredited programs at Smart Schools provide flexible, affordable solutions for adults looking to earn their high school diploma.
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At Smart Schools, we specialize in helping adults 22 and over earn their high school diploma. Our program is accredited, affordable, and designed to fit your needs. Pursue your education from any location!
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Sources
America’s Navy Requirements to Become a Sailor
US Air Force – Meet Requirements