If you didn't finish high school or never got a GED, you've probably wondered whether that shuts the door on a security career before you even start. It's a fair worry — job postings are inconsistent, and a lot of articles online just say "it depends," without telling you what it actually depends on.
Here's the honest answer: whether you need a diploma or GED to become a licensed security guard comes down to your state. Some states don't require one at all. Others require it by law, no exceptions. And separate from all of that, individual employers sometimes ask for a diploma even when the state doesn't. This article breaks those three things apart so you know exactly what applies to you and what to do next.
Key Takeaways
- There's no single national rule — whether you need a diploma or GED to become a security guard depends entirely on your state's licensing agency.
- States like California don't require a diploma or GED for a Guard Card, while Texas, Montana, and Illinois require one by law.
- Even in states without a legal requirement, some employers list a diploma or GED as a preference on job postings, so licensing eligibility and getting hired aren't the same thing.
- Regardless of your education level, every state requires completion of approved pre-assignment training before you can work as a guard — this is a separate requirement you can't skip.
The Short Answer: It Depends on Your State
There isn't a federal security guard license. Each state runs its own licensing process, through its own agency, with its own rules — which means the education requirement isn't consistent from one state to the next. A rule that applies in one state may not exist at all in the one next door.
Why there's no single national answer
Security guard licensing is regulated at the state level, similar to how a driver's license or a cosmetology license works. That means the agency you'd apply through, the paperwork you'd file, and the education rule attached to it are all determined locally. A blanket "yes, you need a diploma" or "no, you don't" answer is going to be wrong for a lot of readers, because it depends entirely on where you live and plan to work.
Licensing law vs. employer preference — two different things
This is where a lot of the confusion sets in. A state licensing requirement is a legal bar you have to clear to get a license or registration card at all. An employer preference is a hiring decision — something a company chooses to ask for on a job posting, whether or not the state requires it. You can be fully eligible to hold a license in your state and still run into an employer who wants a diploma anyway. Both things matter, but they're not the same question, and mixing them together is what makes this topic feel more confusing than it needs to be.
States That Don't Require a Diploma or GED
California is a clear, well-documented example of a state where education isn't part of the legal bar.
California: no diploma or GED needed for a Guard Card
According to the Bureau of Security and Investigative Services (BSIS), a high school diploma or GED is not required to apply for a Guard Card in California. If you meet the state's other requirements, your education history isn't a legal barrier to licensing here.
What California does require instead
Instead of an education requirement, California asks for age and training. Applicants must be at least 18 years old and complete 8 hours of required training — covering Power to Arrest and Appropriate Use of Force — before they can apply for the Guard Card. It's worth noting that the absence of a state rule doesn't mean every employer follows suit. Some job postings still list a diploma or GED as a preference, even though BSIS itself doesn't require it. California tells you what the state expects; it doesn't tell you what every hiring manager will ask for.
States That Do Require a Diploma or GED
California's approach isn't universal. Several states build education directly into their licensing law, and applying without meeting it means you won't get licensed there, regardless of your other qualifications.
Texas
In Texas, applicants for a security guard license must be at least 18 and must hold a high school diploma or GED, in addition to completing the state's required training hours. This is a hard requirement, not a suggestion — without it, the license application won't go through.
Montana
Montana takes a similar stance. State law requires private security guard applicants to be at least 18 and to have completed high school or an equivalent education before they can be licensed.
Illinois
Illinois requires PERC license applicants to be at least 18, hold a high school diploma or GED, have no felony convictions, and complete an approved 20-hour basic security training course. Here, education is bundled with the training and background check as part of one licensing package.
Other states with education-linked requirements
Beyond these three, many states tie education requirements to specific work environments — particularly roles inside hospitals, schools, or government buildings, where the standards for who can be posted tend to run stricter than a general unarmed guard position elsewhere.
| State | Diploma/GED Required by Law? | Other Core Requirements |
|---|---|---|
| California | No | 18+, 8 hours of required training |
| Texas | Yes | 18+, required training hours |
| Montana | Yes | 18+, high school or equivalent |
| Illinois | Yes | 18+, no felony convictions, 20-hour training course |
Does Armed Security Work Differently?
Yes — armed positions generally carry a higher bar across the board, and education is part of that. Armed guard licensing typically requires applicants to be at least 21 years old and to hold a high school diploma, GED, or higher, on top of everything required for unarmed guard work.
This makes sense given what's at stake with carrying a firearm on the job. In practice, it means that even in a state like California, where unarmed licensing doesn't require a diploma, moving into an armed role later may bring an education requirement into play that wasn't there before. If armed work is part of your long-term plan, it's worth checking your state's specific armed permit rules early, rather than assuming the unarmed requirements simply carry over.
Licensing Isn't the Whole Story: What Employers Actually Look For
Passing your state's legal bar gets you eligible for a license. It doesn't automatically get you hired — that's a separate hurdle, and it's where a lot of the "it depends" confusion actually comes from.
Why job postings may ask for a diploma even where the state doesn't
A Minnesota labor market analysis found that many security guard job openings didn't require post-secondary education, though a large share did require a certificate or license — and many postings still asked for a high school diploma or equivalent, even where state law didn't demand one. That gap between "not legally required" and "commonly requested by employers" is exactly why this question feels murkier than it should. The state sets a floor; employers set their own bar above it, and that bar varies by company, shift, and site.
What can help offset a missing diploma
Relevant experience can carry weight here. A background in the military or law enforcement, for example, can strengthen an application even where a diploma is missing, since it signals discipline and relevant skills employers value.
Where the real bottleneck usually is: training, not education
In practice, the piece that trips up more applicants isn't the diploma question — it's the training requirement. Every state requires some form of state-approved pre-assignment training before you can work as a guard, regardless of your education level. That's a fixed requirement you can act on right now, no matter how your state's education rule shakes out.
What to Do Next If You Don't Have a Diploma
You don't need to guess your way through this. There's a clear sequence to follow.
Step 1: Check your state's licensing agency requirements
Start by looking up your state's specific security guard licensing agency and confirming its current education rule. This is the only way to know for certain whether you're dealing with a hard legal requirement or just a common employer preference — don't rely on a general national article, including this one, as the final word for your state.
Step 2: Get a GED if your state requires one
If your state's law requires a diploma or GED, pursuing one is a necessary step before you can be licensed there. It's fair to say this isn't always fast, and depending on your state, you may also need to satisfy additional experience or training requirements on top of it. Don't assume a GED alone closes out every requirement — check what else your state's checklist includes.
Step 3: Complete state-approved pre-assignment training
Whatever your education situation, pre-assignment training is required in nearly every state before you can start working. This is a concrete step you can take now, and it's not contingent on resolving a diploma question first in states where training and education are separate requirements.
If you're ready to move on the training piece, Star Security Training's state-approved pre-assignment courses are a practical next step while you sort out your state's specific education rule.
How Star Security Training Can Help
We can't change what your state's licensing agency requires, and we won't tell you your diploma or GED status doesn't matter — for some states, it does. What we can do is make sure the training piece of this process isn't the thing holding you back.
Star Security Training offers state-approved pre-assignment training that applies regardless of your education background. Completing that training is one part of the licensing process that's fully within your control right now, even while you're still confirming or working toward your state's education requirement. We don't promise a guaranteed license or a guaranteed job — those outcomes depend on your state's rules and each employer's decision. What we do offer is a solid, recognized training foundation to bring to the process once you know exactly what your state expects.
Frequently Asked Questions
Does every state require a high school diploma or GED for a security guard license?
No. This is set state by state, not by a single national rule. Some states, like Texas, Montana, and Illinois, require a diploma or GED by law. Others, like California, do not include an education requirement in their licensing process at all. Always check your specific state's licensing agency to confirm its current rule before assuming either way.
Which states don't require a diploma or GED to become a security guard?
California is a documented example — the BSIS Guard Card application doesn't require a high school diploma or GED, only that you're 18 or older and complete the required 8 hours of pre-licensing training. Requirements vary elsewhere, so this isn't a nationwide standard; you'll need to verify your own state's specific rule with its licensing agency.
If my state doesn't require a diploma, will employers still ask for one?
Often, yes. State licensing law and an individual employer's hiring preferences are two separate things. Even in states without a legal education requirement, many job postings still list a diploma or GED as preferred or required, and many ask for a certificate or license regardless. Meeting your state's legal bar makes you eligible to be licensed — it doesn't guarantee a specific employer will waive their own preferences.
What's the difference between a state licensing requirement and an employer's hiring preference?
A state licensing requirement is a legal condition you must meet to hold a security guard license or registration at all — set by your state's licensing agency. An employer's hiring preference is a separate business decision about who they choose to hire, which can be stricter than what the state requires. You can be legally eligible for a license and still encounter employers who ask for more.
Does the diploma requirement change for armed security guard positions?
Yes, generally. Armed guard licensing typically requires applicants to be at least 21 and to hold a high school diploma, GED, or equivalent, in addition to meeting all unarmed guard requirements. This is on top of state-specific armed permit training. If armed work is part of your goals, check your state's armed licensing rules separately from its unarmed guard requirements.
Can military or law enforcement experience replace a diploma requirement?
Relevant experience, such as a military or law enforcement background, can strengthen a job application and may help offset a missing diploma in the eyes of some employers. However, this doesn't automatically override a state's legal licensing requirement if your state mandates a diploma or GED by law. Check your specific state's licensing rules to see whether experience is recognized as a substitute there.
What training do I need regardless of whether I have a diploma?
Nearly every state requires completion of approved pre-assignment training before you can work as a security guard, independent of your education level. This typically covers topics like use of force and legal authority, and it's a fixed requirement you can complete now while you sort out your state's education rule. It's often the actual bottleneck for applicants, more so than education status.
Frequently Asked Questions
Does every state require a high school diploma or GED for a security guard license?
No. This is set state by state, not by a single national rule. Some states, like Texas, Montana, and Illinois, require a diploma or GED by law. Others, like California, do not include an education requirement in their licensing process at all. Always check your specific state's licensing agency to confirm its current rule before assuming either way.
Which states don't require a diploma or GED to become a security guard?
California is a documented example — the BSIS Guard Card application doesn't require a high school diploma or GED, only that you're 18 or older and complete the required 8 hours of pre-licensing training. Requirements vary elsewhere, so this isn't a nationwide standard; you'll need to verify your own state's specific rule with its licensing agency.
If my state doesn't require a diploma, will employers still ask for one?
Often, yes. State licensing law and an individual employer's hiring preferences are two separate things. Even in states without a legal education requirement, many job postings still list a diploma or GED as preferred or required, and many ask for a certificate or license regardless. Meeting your state's legal bar makes you eligible to be licensed — it doesn't guarantee a specific employer will waive their own preferences.
What's the difference between a state licensing requirement and an employer's hiring preference?
A state licensing requirement is a legal condition you must meet to hold a security guard license or registration at all — set by your state's licensing agency. An employer's hiring preference is a separate business decision about who they choose to hire, which can be stricter than what the state requires. You can be legally eligible for a license and still encounter employers who ask for more.
Does the diploma requirement change for armed security guard positions?
Yes, generally. Armed guard licensing typically requires applicants to be at least 21 and to hold a high school diploma, GED, or equivalent, in addition to meeting all unarmed guard requirements. This is on top of state-specific armed permit training. If armed work is part of your goals, check your state's armed licensing rules separately from its unarmed guard requirements.
Can military or law enforcement experience replace a diploma requirement?
Relevant experience, such as a military or law enforcement background, can strengthen a job application and may help offset a missing diploma in the eyes of some employers. However, this doesn't automatically override a state's legal licensing requirement if your state mandates a diploma or GED by law. Check your specific state's licensing rules to see whether experience is recognized as a substitute there.
What training do I need regardless of whether I have a diploma?
Nearly every state requires completion of approved pre-assignment training before you can work as a security guard, independent of your education level. This typically covers topics like use of force and legal authority, and it's a fixed requirement you can complete now while you sort out your state's education rule. It's often the actual bottleneck for applicants, more so than education status.