The numbers worth tracking, and the ones that waste your time
Six numbers that change decisions, four that feel productive and change nothing, and how often to actually look at any of them.
Jan 27, 2026 · 5 min read
January is when owners sit down with a coffee, open a spreadsheet and promise to get on top of the numbers. By March the spreadsheet is three tabs of things nobody looks at.
Here's a better test. A number is only worth tracking if a value you could plausibly see would make you do something different. Most dashboards fail it. They're interesting, and they change nothing.
Six numbers that change decisions
1. What each class earns after its direct costs. Take what the class brings in for the term, then subtract the teacher's hours, the room's hours and anything it uses up. Say Saturday's 10 AM ballet has 12 dancers at $180 for a 12-week term: $2,160. The teacher costs $30 an hour for 12 hours, $360, and the room costs you about $25 an hour, $300. That class leaves $1,500. Thursday's 7 PM class with four students leaves $60. This is the number that tells you what to close, merge, repeat or add a second section of. For a salon or spa, it's each service per hour of chair or room; for rentals, each room. If you track one thing, track this.
2. How full you are. Spots filled out of spots offered, across the whole schedule. For appointments, booked hours out of the hours your people are working. For rentals, hours rented out of the hours you'd happily rent. As a rule of thumb, well under 70% is a filling problem, and a price change won't fix it. Over 90% for a whole season means you're too cheap, or you need another class.
3. Who joined and who left, not the net. Starting the term with 180 students and ending with 182 looks calm. Gaining 30 and losing 28 to get there is a retention problem dressed up as stability. Count both sides.
4. How many come back. For classes, how many of the students who could re-enroll for the next term did. For a salon or massage practice, how many clients booked their next visit within their usual gap. For parties and rentals, how many came back for a second. It's the plainest measure of whether the business is working, and more honest than any satisfaction survey.
5. First visits, start to finish. Trials booked, trials attended, trials that became a registration. Three numbers, one path. The worst gap tells you which problem you actually have: nobody books (you're not being found), nobody shows (your reminder is weak), or nobody stays (the first class needs work). For appointments, it's first-time clients who come back for a second visit.
6. Revenue per staffed hour. Everything you took in, divided by the hours someone was teaching, cutting or hosting. It compares every class, service and time slot on one line, and it's the fastest way to see that Thursday evening is carrying Tuesday morning.
Four that mostly waste your time
Total students or total clients. Comforting, and nearly useless on its own. It moves for reasons you can't act on, and it hides the gains and losses underneath.
Followers. For a local business, followers and bookings have very little to do with each other. Plenty of businesses have thousands of followers and a half-empty Tuesday. Count enquiries instead: the emails, calls and messages asking about a spot.
Website visits. Meaningful only next to how many of those visits became a booking, and the ones that did are already counted in your first-visit numbers. On its own, it's a vanity number.
Attendance averaged across the business. "We're at 86%" is noise. Attendance is useful per student, as a pattern, for spotting the child who's drifting. Averaged across everyone, the drifting child disappears into it.
How often to look
Looking at a term's numbers every week produces anxiety, not decisions. A class doesn't become worth keeping, or not, between one Tuesday and the next.
- Weekly, ten minutes: the drift list. Students who've missed two classes in a row, or regular clients who are past their usual rebooking gap. This is the only weekly number, and it's a to-do list more than a statistic: someone gets a friendly call.
- Each term or season: what each class earns, how full you are, who came back, and your first visits from booking to registration. For an appointment business without terms, do it every three months.
- Once a year: your overall margin, the total you gave away in discounts, and revenue per staffed hour across the year. January is a good month for it, with the fall behind you and the next fall still far enough off to change.
Make them arrive
The real reason owners don't track anything is that tracking means going and getting it. A number you have to build a report for is a number you'll look at twice and then stop.
So make the rhythm do the work:
- Put the term review in the calendar now, 90 minutes in the week after each term ends, as fixed as a class.
- Keep one page with the same six lines, and fill in a new column each time. The comparison with last term is where the meaning is.
- Set the weekly drift list for the same morning each week, before the phones start.
- Use what your system already counts. If you're copying numbers out of it by hand into a spreadsheet each term, that's the step that dies first.
In Caletan, Reports has revenue by class for a season, who's new and who isn't in a class any more, and attendance by class and by student over the last 30 or 90 days, so the drift list and most of the term review are a matter of opening a page. Teachers fill it in by taking the register on their phone (how attendance works).
The trap at the end of the review
The point of a number is a decision. It's very easy to spend the 90 minutes building a beautiful picture of the term and then change nothing.
Finish each review by writing down one thing you'll do differently, with a date beside it: "Merge the two Thursday jazz classes from the winter term," or "Call every family who didn't re-enroll by February 15." If you can't name one, either the term really did go well, or you're tracking the wrong things.
