An accredited high school is one that has been evaluated by an independent accrediting agency and found to meet established standards for curriculum quality, teacher qualifications, and administrative practices. Accreditation is essentially a seal of approval confirming that a school provides a legitimate, quality education. It matters because it affects whether colleges accept your diploma, whether employers take your credentials seriously, and whether your credits can transfer to another school.
How High School Accreditation Works
Unlike what many people assume, the U.S. Department of Education does not directly accredit schools. Instead, the Department recognizes private accrediting agencies and confirms they are reliable authorities on educational quality. Those agencies then evaluate individual schools. A school that wants accreditation voluntarily requests an evaluation, submits to a review process, and earns accredited status only if it meets the agency’s criteria.
The review process typically involves a self-study where the school documents its own practices, followed by a peer evaluation where educators from other schools visit and assess things like curriculum rigor, graduation requirements, teacher credentials, student support services, and financial stability. Accreditation is not permanent. Schools must undergo periodic re-evaluation, usually every five to ten years, to maintain their status.
Regional vs. National Accreditation
There are two broad categories of accreditation, and the distinction has real consequences for students.
Regional accreditation is widely considered the more prestigious and recognized type. Six regional accrediting agencies cover different parts of the country, including the Southern Association of Colleges and Schools (SACS), the New England Association of Schools and Colleges (NEASC), and the Higher Learning Commission (HLC), among others. Most traditional public and private schools hold regional accreditation. Credits and diplomas from regionally accredited schools transfer easily to colleges and other schools, and they are universally accepted by employers and tuition reimbursement programs.
National accreditation typically applies to vocational, career-focused, technical, or faith-based schools. Nationally accredited institutions often have more relaxed admission standards and may cost less. However, the trade-off is significant: credits earned at a nationally accredited school generally do not transfer to regionally accredited colleges. If you later want to attend a regionally accredited university, you could find yourself starting over. Employers accept diplomas from nationally accredited schools, but graduates are not always eligible for corporate tuition reimbursement plans.
Why Accreditation Matters for Students
If you are a high school student, a parent, or someone considering an online high school or diploma program, accreditation status should be one of the first things you check. Here is what it affects in practical terms:
- College admissions. Most colleges and universities require applicants to have graduated from an accredited high school. A diploma from an unaccredited school may not be accepted, which could force you to earn a GED instead.
- Credit transfers. If you switch schools mid-year or move to a new state, an accredited school’s transcripts are far more likely to be accepted by your new school. Without accreditation, you may need to repeat coursework.
- Military enlistment. Branches of the U.S. military distinguish between accredited high school diplomas and GEDs when evaluating applicants. An accredited diploma generally puts you in a more favorable enlistment category.
- Financial aid eligibility. For postsecondary programs, attending an accredited institution is often a prerequisite for federal financial aid. While this applies more directly at the college level, it sets the pattern: accreditation is the gateway to funding.
- Employer recognition. Some employers verify that your high school diploma comes from an accredited institution, particularly for government jobs or positions that require background checks.
Online High Schools and Diploma Mills
Accreditation is especially important when evaluating online high schools. The internet has made it easy for companies to offer fast, cheap diplomas that carry no real educational value. These operations, often called diploma mills, may claim to be accredited but list fake or unrecognized accrediting bodies. A diploma from one of these programs is essentially worthless for college admission or employment verification.
Legitimate online high schools do exist, and many hold proper regional accreditation. The difference is that accredited online programs require real coursework, qualified instructors, and meaningful assessments. If an online school promises a diploma in weeks with minimal effort, that is a strong warning sign. A real accredited program takes time because it covers the same material a traditional high school does.
How to Verify a School’s Accreditation
Checking a school’s accreditation status is straightforward, though no single database covers every K-12 school in the country. Start with the accrediting agency the school claims to hold. Each regional and national accrediting body maintains a searchable directory of its member institutions on its website. If the school names an accrediting agency you have never heard of, search for that agency on the U.S. Department of Education’s list of recognized accrediting agencies. If it does not appear there, the accreditation is not officially recognized.
Your state’s department of education is another reliable resource. Most states maintain lists of approved or accredited schools operating within their borders, including online schools that serve state residents. Contacting the state education office directly can confirm whether a school meets your state’s standards.
For postsecondary institutions, the Department of Education maintains the Database of Accredited Postsecondary Institutions and Programs, which compiles information reported by recognized accrediting agencies. This database focuses on colleges and universities rather than high schools, but it is useful if you are evaluating a program that bridges high school completion and college credit.
When in doubt, ask the college or employer you are trying to impress. Admissions offices can tell you quickly whether they recognize a particular high school’s accreditation, and that answer is ultimately what matters most.