Skool does not publish how many communities exist on it. So the honest answer to this question is not a number — it is a number plus a description of what could and could not be seen.
How many can actually be counted?
18,412 Skool communities were mapped from the outside in this measurement, with a further ~14,600 identified as private and therefore uncountable from a public crawl.
Every figure in that pair is a floor. Discovery is the binding constraint, and it is not evenly distributed:
Communities over 10,000 members are essentially all visible. Communities under 100 — which is most of them — are mostly not. A small room is linked from fewer places, listed in fewer directories and surfaced in search far less often, so counting what you can see systematically undercounts the small end.
Correct for that gradient and the population looks very different from the visible one: roughly 75% of Skool communities have fewer than 100 members, against 48% on the raw visible counts.
The limit worth stating: the correction is a capture-recapture estimate, so it carries that model's assumptions. The direction is not in doubt — small communities are undercounted — but the exact multiplier is a best estimate, not a census.
Why does the count matter?
Not for the trivia. It matters because it tells you what population your community belongs to, and almost every intuition owners carry about Skool comes from the wrong one.
Owners meet Skool through the communities they joined. Those are overwhelmingly the large, well-marketed, easily-discovered ones — the same 0.5% of communities that hold 41% of all memberships. So an owner with 90 members measures themselves against a sample drawn almost entirely from the top fraction of one percent, and concludes they are behind.
They are not behind. They are in the middle of a platform whose middle nobody can see. That single correction is worth more than the headline count: see the average Skool community size for what the distribution actually looks like.
What about the private communities?
Roughly 14,600 communities were identified as private — they exist and can be named, but nothing about their membership, posts or activity is readable from outside.
This matters for how you read every other figure in this research. Every public benchmark, including all of ours, describes public communities only. A private community is not a rounding error on this platform; it is close to half of what was found. If private rooms behave differently — and there is no reason to assume they do not, since privacy is usually a deliberate product choice — then no outside measurement can tell you so.
We report that as an absence rather than dressing it up. It is the single largest known gap in any public measurement of Skool.
Is Skool growing?
By community count, and quickly — though what an outside crawl sees is survivors rather than launches.
Roughly three quarters of all mapped Skool communities were created in 2025 or 2026. Communities predating 2024 are about 4% of the total.
One caveat carries real weight here: dead communities are invisible from outside. A community created in 2024 that emptied out and went quiet does not appear in this count. So the shares above describe what survives today, not what was created — and the apparent growth curve is partly a survival curve. Nobody outside Skool can separate the two.
How should you use this number?
Three practical uses, and one misuse to avoid.
As a denominator for your own position. Knowing that 75% of communities are under 100 members turns "we only have 80" into a fact about the middle of the market rather than a confession.
As a sanity check on claims. Anyone quoting a precise total for Skool is quoting something that has not been published. If a figure arrives without a description of what was counted and what was missed, treat it the way you would treat any unsourced number.
As context for what a benchmark can cover. With ~14,600 private communities unreadable, no public benchmark speaks for the whole platform — ours included. That is worth knowing before you hold your own numbers against one, and it is why every figure in this library carries its scope.
The misuse: treating the count as a measure of competition. The number of communities on Skool tells you nothing about how many are in your niche, active, or any good. Community size and community health are close to unrelated — who actually writes the posts is a far better indicator of whether a room is alive.
These figures come from The State of Skool 2026, an independent measurement of 18,412 Skool communities. See the full report for the discovery model behind the correction and 21 other findings.