WCAG Levels Explained: What Level AA Actually Means for Your District
By Kalin Schoephoerster | KShep Creative
This is the second post in a six-part series on WCAG for K–12 districts. If you're new to WCAG, What Is WCAG? A Plain-Language Introduction for K–12 Leaders → is a good starting point.
Once you know what WCAG is, the next thing you'll encounter is a number and a letter: WCAG 2.1 Level AA. Or WCAG 2.2 Level AA. It shows up in vendor contracts, state guidance documents, and legal requirements — usually without much explanation of what the level part actually means.
The level is not a score. It's not a grade. It's a designation that tells you which set of requirements applies and how demanding they are. Understanding the difference between Level A, Level AA, and Level AAA is the difference between knowing what the standard is and knowing what you're actually required to do.
This post explains each level in plain language — what it covers, what it looks like in practice, and why Level AA is the one K–12 districts need to focus on.
How WCAG is structured — criteria and levels
Before getting into the levels, it helps to understand what they're organizing.
WCAG is built around success criteria — specific, testable statements about what accessible content does or doesn't do. WCAG 2.2 has 87 success criteria in total. Each one describes a concrete requirement: images must have text alternatives, videos must have captions, text must have sufficient contrast against its background. Each criterion is either met or not met. There's no partial credit.
Every success criterion is assigned to one of three conformance levels: A, AA, or AAA. The level reflects how significant the barrier is and how broadly it affects users. Level A criteria create the most fundamental barriers. Level AAA criteria address the most complex and demanding requirements.
The levels are cumulative. Conformance to Level AA means meeting all Level A criteria and all Level AA criteria. You can't claim Level AA conformance while skipping Level A requirements — the levels build on each other.
Level A: the minimum
Level A is the baseline. It covers the most fundamental accessibility barriers — the issues that make content completely unusable for at least some users.
If a criterion is Level A, failing it creates a total blocker. Not an inconvenience. Not a friction point. A complete barrier to access for real users trying to access real content.
Some Level A examples that K–12 leaders will recognize in practice:
Images must have alternative text so screen readers can describe them to users who can't see them
Videos with audio must have synchronized captions
Pages must have meaningful titles that describe their content
Content must not rely on color alone to convey information
Meeting Level A alone is not sufficient for ADA Title II compliance or most other legal and best-practice contexts. It's the floor, not the target. A site that only meets Level A still has significant barriers for users with disabilities — it's just cleared the most extreme ones.
Level AA: the target for K–12 districts
Level AA is where the standard becomes meaningful for most organizations. It addresses the most significant and most common accessibility barriers without requiring the highest level of technical complexity.
When a law, contract, policy, or vendor agreement references "WCAG conformance," it almost always means Level AA. Under ADA Title II, K–12 districts are specifically required to meet WCAG 2.1 Level AA. Not Level A. Not Level AAA. Level AA — meaning all Level A criteria plus all Level AA criteria together.
Some Level AA examples that K–12 leaders will recognize in practice:
Text must have sufficient color contrast against its background — a ratio of at least 4.5:1 for normal-sized text. Light gray text on a white background fails this. Many brand color combinations fail this without anyone realizing it.
Navigation must be consistent across pages so users can predict where to find things
Form fields must have visible labels — not just placeholder text that disappears when someone starts typing
Error messages must clearly identify what went wrong and how to fix it
Keyboard focus must be visible so users navigating without a mouse can see where they are on the page
Images of text should be avoided in favor of real, selectable text
These aren't minor technical details. They're the barriers that affect real people trying to access real district content. A family using a screen reader to find enrollment information. A staff member with low vision trying to complete an HR form. A parent navigating the district website on an older phone. Level AA is about making sure those experiences work — not just for the majority of users, but for everyone.
Level AAA: aspirational, not required
Level AAA is the most demanding level. It covers the most complex accessibility requirements, and W3C itself acknowledges that full Level AAA conformance is not achievable for all content types. It's not required by ADA Title II, and it's generally not a realistic near-term target for most K–12 districts.
Some Level AAA examples to illustrate the difference in complexity:
Providing sign language interpretation for all prerecorded audio content
Meeting a higher text contrast ratio of 7:1 rather than the 4.5:1 required at Level AA
Providing extended audio descriptions for video content where pauses aren't sufficient to convey all information
Knowing Level AAA exists is useful context. Treating it as a compliance requirement is not — and confusing it with Level AA can lead districts to either overestimate what's required or dismiss the whole standard as too demanding. Level AAA is aspirational. Level AA is the legal requirement.
One nuance worth noting: some individual Level AAA criteria are worth implementing even if full AAA conformance isn't the goal. Sign language interpretation for key public-facing videos, for example, is a meaningful accessibility improvement even if it doesn't appear on your compliance checklist. The levels describe what's required — they don't limit what's possible.
What conformance actually means in practice
Understanding the levels is useful. Understanding what it means to actually meet them is what turns that knowledge into action.
Conformance is binary, not scored. Each success criterion is either met or not met. There's no score out of 100, no percentage compliance figure, no grade. When a vendor or tool claims "we're 90 percent accessible," that's not a WCAG conformance statement — it's a marketing claim. WCAG conformance means meeting all applicable criteria at the stated level. Period.
Conformance applies to all content, not just the homepage. Meeting Level AA on the homepage while the rest of the site has inaccessible PDFs, videos without captions, or forms with unlabeled fields doesn't constitute conformance. The requirement applies across the full scope of your district's digital content. For districts with large, accumulated content libraries, this is often where the real work lives — and why the remediation effort is usually larger than initially expected.
Conformance is ongoing. Every new page, document, or video your district publishes needs to meet the standard. A district that achieves Level AA conformance and then continues creating content without accessible practices in place will drift out of conformance over time. The goal isn't just fixing what exists — it's building the practices that keep new content accessible going forward.
Knowing where your district currently stands relative to Level AA is the starting point for all of this. That's what an accessibility audit provides: a clear picture of what meets the standard, what doesn't, and what to address first. Learn more about accessibility audits →
What comes next
The next post in this series addresses one of the most common points of confusion in K–12 accessibility conversations: the difference between WCAG 2.1 and WCAG 2.2, and what that distinction means for your district's compliance obligations.
[WCAG 2.1 vs. WCAG 2.2: What Changed and What Your District Needs to Know → coming soon]
Level AA is the target — now the question is where you stand
Most K–12 districts don't have a clear picture of how their current content measures up against Level AA. They know the requirement exists. They're less sure what it would take to meet it — or how far they currently are from meeting it.
An accessibility audit closes that gap. It's not a judgment — it's a map. And a map is what makes the work manageable.
Book a free 30-minute intro call →
Or explore accessibility audit and remediation services → to see what evaluating your district's content against WCAG Level AA actually involves.
Kalin Schoephoerster is a CPACC-certified instructional designer and accessibility consultant based in St. Paul, MN. KShep Creative partners with K–12 districts, higher education institutions, and EdTech organizations to develop accessible eLearning, instructor-led training, curriculum, SOPs, and website accessibility audits aligned with WCAG 2.2 and ADA Title II requirements.