Here’s a number worth sitting with: the median group class attendance worldwide is 6.6 people.

That’s from Two-Brain Business and Kilo’s State of the Industry data, which draws from tens of thousands of gym sessions across multiple countries. The number has held close to that mark for two consecutive years: 6.34 in 2024, 6.6 in 2025.

Six and a half people. In a class you’re selling as group fitness.

That’s not big group. That’s a semi-private session. And most gyms are running those sessions at big-group prices.

The Pricing Gap Nobody Talks About

Big group fitness pricing is built on a simple model: you spread coach cost across a large number of clients, which brings per-member cost down and makes the class accessible. It works at 18 people. It works at 25.

It doesn’t work at 6.

At six people, you’re delivering a fundamentally different product. The coach can actually see each person in the room. There’s enough space to give individual feedback. Members aren’t waiting for a rower or a barbell. The interaction is closer to personal training than group exercise.

But the price tag says otherwise. A big-group drop-in rate or unlimited membership might run $30-60/month at many facilities. Semi-private sessions at 3-6 clients per coach typically command $150-400/month, sometimes more, depending on market and format.

If your classes average six people, you’re leaving a significant amount of revenue on the table every session. Not because your product is bad, but because your pricing doesn’t reflect what you’re actually delivering.

How This Happens

Most operators didn’t design their way into this situation. They built a group class model, grew it, and then watched attendance settle at a level that’s totally manageable but not what they imagined. The 25-person class they planned for became the 6-person class they’re actually running. The pricing never adjusted.

There are a few patterns that tend to produce this outcome.

Oversaturation of the schedule. Gyms that offer 15-20 classes per week often spread attendance thin across too many slots. Each individual class ends up smaller because the same members are distributed across more options. Consolidating your schedule can concentrate attendance in fewer, fuller sessions. The class schedule audit framework covers exactly how to run that review.

Mixed-goal formats. Classes that try to serve everyone (the beginner who wants coaching and the experienced athlete who wants intensity) often end up serving neither particularly well. Attendance stays modest because the product isn’t sharp enough to be someone’s primary training home.

Retention gaps. Classes stay small when members cycle through without sticking. If the first 90 days aren’t working (new members don’t feel seen, don’t build relationships, don’t feel progress), they leave before they become regulars. Small average attendance is sometimes a symptom of a retention issue upstream. The 90-day member journey is worth reviewing if that’s the case.

None of these are permanent. But they require different fixes, and the first step is accurately diagnosing which one applies to you.

Three Paths Forward

If your average class size is in the 4-8 person range, you have real options. Which path makes sense depends on your facility, your members, and what you’re trying to build.

Path 1: Stay Small, Charge Accordingly

The simplest option is to embrace what you’re actually running and reprice it. If you’re delivering a semi-private product (consistent small groups, high coaching contact, individual feedback, progressive programming), charge what that’s worth.

This usually means restructuring your membership tiers. Small-group or semi-private memberships at $150-300+/month replace the generic unlimited pass. You may lose some price-sensitive members. That’s fine. The ones who stay are paying for the value they’re receiving, which makes the model financially sustainable and makes your coaches’ jobs more meaningful.

This isn’t a hypothetical. Two-Brain data shows coaches in well-run semi-private models earning $80-120/hr. The math works when the pricing reflects the product.

Path 2: Grow the Group Intentionally

If big group is genuinely your model and you want to grow attendance toward 15-25 people per class, then treat that as an active project rather than something that will happen on its own.

Growing class attendance requires the same rigor as any acquisition or retention initiative. You need to know which slots have the most growth potential, which formats attract the most consistent members, and what the coaching experience looks like in those classes. A class that reliably delivers results and creates connection will grow through word of mouth. One that feels generic won’t, regardless of how much you market it.

The programming quality question is relevant here. Group strength classes that are built around progressive overload create a retention effect that other formats often don’t. Members come back because they’re measurably getting somewhere. That’s a growth engine that costs nothing beyond good programming.

Path 3: Hybrid Model

This is where most well-run gyms are heading. The Two-Brain data shows 1:1 and semi-private as the primary revenue anchors, with big group as a secondary offering that creates community and serves members who don’t (yet) need more individual attention.

In practice, this might mean keeping 6-8 group classes per week as the accessible, community-facing product, while adding dedicated semi-private time blocks for members who want more coaching contact and are willing to pay for it. The two products serve different needs and different price points.

The operational shift required is manageable: dedicated time blocks, separate booking, and coaches trained to deliver the semi-private format well.

The Coaching Implication

One thing worth being honest about: smaller classes require more from your coaches, not less.

In a big group, a coach can manage energy from the front, keep the pace, and deliver a competent class without deep individual engagement. At six people, that approach is visible immediately. The coach who doesn’t know members’ names, doesn’t track who’s improving, and delivers generic cues to the room isn’t delivering what the format promises.

The skills that matter in small-group and semi-private settings are load monitoring, individual feedback under fatigue, and genuine relationship with each person in the room. If your coaches haven’t been evaluated on those specific competencies, the coaching evaluation framework gives you a starting point.

Worth noting: the instruction quality bar is also higher. In a room of six, verbal-only coaching doesn’t cut it. Demonstration, tactile correction, and movement-specific feedback matter more than in a large class where individual attention isn’t the expectation.

What to Check This Week

If you haven’t looked at your actual class attendance data recently, this is the week to do it. Pull the last 60 days.

A few questions worth answering:

  • What’s your median class attendance across all formats and time slots?
  • Which classes consistently run under 8 people, and which run over 15?
  • What are those small classes priced at, relative to what you’d charge for a semi-private session?
  • Are those small classes growing, holding steady, or shrinking?

The answers usually tell you which path makes sense. Gyms with consistently small classes that aren’t growing are probably running a semi-private product at the wrong price. Gyms with high variance (some classes packed, some empty) probably have a schedule structure issue.

Either way, the data will point you somewhere useful.

The Broader Shift

The trend here isn’t going away. Two-Brain’s data shows the fitness business moving toward higher-value, more personalized models. Revenue per client is increasing in gyms that make the shift. Gyms that keep running big-group models at big-group prices with big-group volumes of 6 people are working harder for less margin than they should be.

The good news: if your classes already average 6 people, the hard part of the transition is already done. You’re already in the room with a small group who is there, paying attention, and getting coached. The question is whether your pricing and positioning reflect that.

Next up: what a real lead follow-up system looks like for a small gym, from speed-to-lead to closing the appointment. The Two-Brain data shows 14% of gyms never call a lead. If you’re not one of them, there’s still probably room to improve.