How to Fill a Course That Isn't Filling

Cohort enrollment does not arrive evenly. It arrives in a curve with a long flat middle and a spike at the end, and the flat middle is where most programs make the decision that ruins the next one.

The pattern, roughly: a handful of sign-ups in the first days from people who were already waiting, then weeks of near silence, then somewhere between 40 and 60 percent of the whole cohort in the final three weeks before the deadline. If you do not know that curve is normal, week six feels like failure, and failure produces the discount.

The number: open registration 10 to 14 weeks before the start for a program costing over $1,000, 6 to 8 weeks for a weekend or short course. Set the application deadline two weeks before the start, not the day before. The deadline is what creates the spike; without one there is no reason for anyone to decide today.

Stop discounting in the last week

The panic discount works once. Then your returning participants and everyone who talks to them learn that waiting is rewarded, the flat middle gets flatter next time, and the spike moves later. You have trained your own audience to wait.

If you need a price incentive, put it at the front where it does useful work: an early-commitment rate that expires on a stated date, six or eight weeks out. That pulls sign-ups forward, which gives you real information early enough to act on. Scholarships and payment plans are different and should be visible from day one — they widen access rather than punishing the decisive.

The funnel, for cohorts

Four stages, and each has one job.

Inquiry. Somebody raises their hand. Your only job is speed. Reply within an hour during working hours, with a real message from a named human, not an autoresponder. Response time predicts enrollment more strongly than almost anything else you control.

Information session. This is the highest-leverage thing most trainings under-use. A 45-minute live session, run on a fixed monthly rhythm, where the lead instructor teaches something small and real for twenty minutes and answers questions for twenty-five. Not a sales webinar. It converts because these decisions are about whether the participant trusts the teacher, and twenty minutes of actual teaching answers that better than any page of copy.

Deposit. The moment intent becomes a forecast. Take a deposit rather than full payment, make the terms plain, and count deposits rather than expressions of interest when you decide whether the cohort runs.

Start. The gap between deposit and start day is where funded and low-cost programs lose people. Send something every week: what to bring, who else is coming, a short note from the instructor, the reading. Silence in that window reads as disorganization.

Rough rates to plan against

Work backwards from them. A twelve-person cohort needs roughly 35 deposits' worth of interest, which needs around 100 info-session attendees or equivalent depth of conversation, which needs perhaps 250 to 300 inquiries across the year for three intakes. If your inquiry flow is 40 a year, no amount of email rewriting fixes the arithmetic. The problem is upstream.

The four sources that actually fill cohorts

Alumni. They refer at rates nothing else matches, and almost nobody asks them. Ask specifically and at the right moment: two weeks after completion, when the experience is fresh, with a named request — "who is the one person you'd want in the next cohort" — rather than a generic share request.

The list. Everyone who ever inquired and did not enrol. Most programs let this rot. It is the cheapest cohort you will ever fill. One email per intake, plainly written, no drip sequence needed.

Partners who teach adjacent things. The yoga studio near the bodywork school, the seed company near the permaculture course, the clinic near the herbal training. Cross-referral is free and the audiences overlap almost perfectly.

Search, for the ones actively looking. Somebody typing "herbalism certification near me" is worth more than a thousand people scrolling. This is a small number of people with very high intent, which is what search is good for.

If it still doesn't fill

Run it anyway if you can afford to, with a smaller group, and treat the cohort as the marketing asset it is. Twelve people who finish and talk about it beat a canceled cohort every time, and a cancellation is remembered by everyone who deposited. If you cannot afford to run it, tell people early and personally, refund immediately, and give them a named date for the next one. How you cancel determines whether they come back.

By Sascha Rossaint · Reviewed by Curtis Guild · August 2026

About the author

Sascha Rossaint

Founder & Head of Growth

Sascha owns growth at HolyOps — the strategy, systems and infrastructure that turn a mission into a business that can carry it. Former COO at Activation Products, with 15+ years building structure, teams and systems for teachers, institutes and conscious brands.

Reviewed by Curtis Guild, Partner & Head of Client Success.