Every benchmark you have read about Skool is an average taken over a population where a tenth of the people do two thirds of everything. Once you have seen the shape, you cannot read an average the same way again.
How concentrated is activity on Skool?
Sorting members by how many days a year they are active, and comparing what share of members sits in each bucket against what share of activity they produce:
The most active 10.6% of members generate 68.4% of all activity. The quietest 52.8% — more than half the platform — generate 0.6% between them.
Look at the left column and the right column of that chart as two different populations, because behaviourally that is what they are. Member share is remarkably flat: roughly a tenth of people in every bucket. Activity share is anything but. The curve only starts to bite in the last two rows, and then it takes almost everything.
Does the same thing happen inside a single community?
Yes, and harder. Within a community, about 1.1% of members account for roughly 40% of activity.
That is the same law that governs posting. A median 2.15% of members write three quarters of all posts, and that ratio holds across a 62-fold range of community sizes — who actually writes the posts works through the proof, including the check that it is membership rather than history depth driving it.
So concentration is not an artefact of pooling everyone together. It is the shape of a community at every scale that has been measured, and it is the shape of the platform those communities add up to.
The uncertainty worth stating: 34.4% is what was measured for the quietest group's share of members with no meaningful activity history. If the 38% of members with no activity history at all are largely near-dead — and they are 2.7 times less likely to have been online in the last 30 days — the real figure sits high in the 34% to 60% range. The direction is solid; the exact share of the platform that is effectively inactive is not.
Why does this break averages?
Because a mean divides the total by everybody, and the total is dominated by people who are nothing like everybody.
The clearest case is time online. The platform's member-weighted figure is about 37 minutes a week, but the distribution behind it runs from under 10 minutes at the 10th percentile to over 11 hours at the 99th. One member with 9,000 actions outweighs eighty members with five each. How much time members spend on Skool has the full spread, and the honest summary is that the average describes nobody.
The same applies to activity days: the median member is active 26 days a year against a mean of 81 — a gap of more than three times, produced entirely by the hyperactive tail. There is no average Skool member is the longer version of that argument.
Practical rule: when you read any Skool statistic, ask whether it is a median or a mean. If it is a mean, it is probably describing the 10.6%.
What do you do about it?
Stop planning for the average member. They do not exist. Plan for at least three groups: a tiny core who are there constantly, a middle who appear weekly-ish, and a majority who are barely present. A single content strategy aimed at the middle of a distribution this skewed misses in both directions.
Protect the core deliberately. A tenth of your roster produces most of what makes the room feel alive, and within your community the effective number is much smaller — about four people in a 200-member room. That is a list you could write down. Most owners cannot, because the default view shows recent activity rather than sustained contribution.
Judge the quiet majority by a different standard. More than half the platform produces under 1% of activity, so a large silent membership is not a symptom of anything wrong with your community — it is the base rate everywhere. What is worth measuring is not how many are quiet but how many are reachable: presence and participation are different things, and a substantial share of a quiet roster is still on Skool regularly. The untapped share measures exactly that population.
These figures come from The State of Skool 2026, an independent measurement of Skool communities. See the full report for the full concentration analysis and 21 other findings.