Sonography Prerequisites by State & Program-
“What are the sonography prerequisites in my state?” is one of the most common applicant questions — and the honest answer is that prerequisites are set by individual programs, not by states. The science core is remarkably consistent nationwide, while the details vary program to program. What does differ by state is licensure. This guide explains what’s consistent everywhere, where the variation actually lives, how the state-line question affects out-of-state applicants, and how to research the requirements for any specific program.
Wherever you apply, CAAHEP-accredited sonography programs share a recognizable prerequisite core:
If you complete this core well, you’re positioned for programs in most states. That consistency is the single most useful fact for applicants who aren’t sure where they’ll end up — see the complete prerequisites guide for the full breakdown.
The differences are at the program level, not the state level:
| Varies by program | What to check |
|---|---|
| Exact GPA threshold | Minimum vs. competitive; how the science GPA is weighted. |
| Math requirement | College algebra, statistics, or either. |
| Physics sequence | One course or a two-course sequence. |
| Recency window | Length, and which courses it applies to. |
| Observation hours & entrance exam | Required counts and which exam, if any. |
Two programs in the same state can differ more from each other than two programs in different states — which is why “by program” is the right unit of analysis, not “by state.”
Most states rely on national certification (through ARDMS) rather than a separate state license, but a few states do require sonographers to be licensed to practice. Licensure governs working in the state after you’re credentialed — it’s separate from program admission and from prerequisites. Because licensure laws change, don’t rely on a list; confirm your state’s current rules directly with its licensing board, and confirm credentialing expectations with your program. See how sonography credentialing works for the national picture.
Planning to apply across state lines, or complete prerequisites online while living elsewhere? A few practical points: prerequisite acceptance depends on the course’s accreditation and content, not on which state you took it in, so a regionally accredited course transfers regardless of location. If you intend to work in a different state than where you train, check that state’s licensure rules early. And because the core is consistent, online prerequisites let you build toward programs in several states at once rather than betting on one location — useful if you’re willing to relocate for a seat.
Confirm with the program and the board. Prerequisites are program-specific and licensure is state-specific, and both change. Confirm prerequisites with each program’s registrar and licensure with your state’s board. We don’t guarantee admission, transfer, or licensure eligibility, and we don’t rank programs.
If you might work in more than one state over your career, the national-certification model works in your favor: an ARDMS credential is recognized nationwide and travels with you, unlike a state-specific license. In the few states that require licensure, you’d complete that state’s additional steps on top of your national credential, and you’d need to meet each licensing state’s rules separately — there isn’t a single multi-state license for sonographers the way some professions have. The practical advice: earn your national credential first, since it’s portable, then check the specific licensure requirement of any state you plan to move to before you relocate. Prerequisites and program admission, by contrast, aren’t state-bound at all — only where you ultimately practice is.
Prerequisites are set by individual programs, not states, and the science core is consistent nationwide. What varies by state is licensure. Confirm specifics with each program.
Most rely on national certification rather than a state license, but a few states require licensure. Because rules change, confirm your state’s current requirement with its licensing board.
Algebra-based physics, A&P I & II, a math course, supporting general education, a competitive GPA, and a science recency window appear almost everywhere.
Acceptance depends on the course’s accreditation, content, credits, lab, and recency — not the state where you took it. A regionally accredited course transfers regardless of location, subject to the program’s confirmation.
Locate CAAHEP-accredited programs through the CAAHEP directory, then read each program’s prerequisite page and confirm details with its registrar.
Continue with the complete sonography prerequisites guide, transferable sonography prerequisites, and recency rules.
Authoritative resources: CAAHEP for accredited programs, the ARDMS for credentialing, and the BLS Occupational Outlook.
