Per-student pricing, and why it punishes growth
Per-student pricing looks cheap at 60 students and becomes your largest bill at 400. The math, the "active student" trap, and the questions that expose it.
Mar 3, 2026 · 5 min read
Per-student pricing is the most common way class software is sold, and the one that ages worst. It's cheapest exactly when you're comparing products, and most expensive exactly when you've stopped looking.
It isn't a trick. It's a model with a shape, and the shape is easy to see once you put your own numbers in it.
What it does over time
Per-student pricing turns your software bill into a cost that grows with your roll, while what the software does for you stays the same. Your 400th student costs the company that makes it nothing more to serve than your 40th. You pay for both.
Work it through with an illustration. Say a plan charges $1.50 per student a month:
| Students | Per month | Per year |
|---|---|---|
| 60 | $90 | $1,080 |
| 150 | $225 | $2,700 |
| 400 | $600 | $7,200 |
At 60 students, $90 a month feels like nothing, and it beats a flat plan at $150. At 400, the same software costs four times what the flat plan would, and it's doing the same job: the same schedule, the same registration form, the same billing.
The awkward part is the direction. Every student you add makes your software more expensive, so every new class is slightly less profitable than it looks on paper, and the business growing fastest pays the most. A studio that doubles its roll doubles its software bill for the privilege.
The "active student" trap
This is where to look hardest, because it's where the real money goes. Before you compare anyone's rate, find out what they count as a student:
- Enrolled right now, or enrolled at any point in the last twelve months?
- Does a student who left in October still count in July?
- What happens over the summer, when your roll drops by half?
- Are trial students counted? Waitlisted ones? Each sibling on one family account?
- Does a camper who came for one week in August count all year?
The definition can change the bill more than the rate does. Say you have 250 students today, and 80 others left at some point during the year. If "active" means anyone enrolled in the last twelve months, you're paying for 330. At $1.50, that's $120 a month for students who've gone.
Worse is a system that counts every record you've never deleted. Then your cost grows with your history, not your business, and the only way to bring it down is to delete people by hand, which nobody gets around to, and which takes their records with them.
Get the definition in writing, with an example.
Model it at your target size
The mistake is comparing entry prices. Compare the bill where you plan to be in three years.
Write down three numbers: your roll today, your roll at the busiest point of the year, and the roll you're aiming for. Then ask each product what you'd pay at each one, all in. With the illustration above against a flat $150 a month, the crossover is 100 students. Below it, per-student wins. Above it, every student widens the gap.
Your own crossover depends on the numbers in front of you, but the shape is always the same. The honest question is whether you expect to pass it, and whether you'd actually move once you had.
Why it's hard to leave later
By the time per-student pricing has become expensive, you have three or four years of families, payments and attendance in the system. Parents know where to log in. Teachers know the register. Your card payments may run through the same company.
That's the model's real advantage to the company selling it: the bill rises slowly enough that no single month feels like the month to act. It goes from $90 to $110 to $140 to $190, and each step is too small to justify a weekend of moving everything.
So do the arithmetic once a year, in the quiet week before fall registration, and decide on purpose.
The questions that expose it
Ask these by email before you sign, so the answers are in writing:
What exactly counts as a billable student, and for how long after they leave?
What would I pay each month at 150 students, and at 400?
What happens to the bill in a month when my roll drops by half?
How do I remove a student who has left, and does the bill go down that month?
A straightforward company answers all four in one reply. Hesitation on the first one tells you most of what you need to know about the rest.
When per-student is fine
It isn't always the wrong choice.
You're small and staying small. Sixty students, one room, no plans for a second location. Per-student may really be the cheapest thing on offer, and you should take it.
Your roll is steady. If you've run 180 students for five years, a per-student plan behaves like a flat plan, and the objection mostly falls away.
The bands are wide. Some plans charge by bands (up to 100 students, up to 250) rather than per head. Wide bands behave much more like a flat price than a true per-student charge, as long as you know where the next band starts.
The problem isn't the model. It's choosing it at 60 students, growing to 400, and never doing the math again.
Ours, for comparison
Caletan doesn't count students at all: there's no limit on students, staff or locations on any plan. You pay 0.2% of card payments on Pay as you go, or a flat $9 or $100 a month, with no contract; it's all on our pricing page. A percentage rises with your success too, so it's a different trade, not an absent one. The difference is that it rises with what you collect, not with how long your list is.
