Over 14 years of building Ruzuku, we've accumulated something no affiliate site or industry survey can replicate: production data from 32,000+ courses, 1.8 million student enrollments, and 19.8 million individual lesson completions. This page is the canonical reference for that data — the numbers I draw on when advising course creators, and the source behind every platform statistic cited on this site.
Platform Scale
Completion Rates by Course Format
The single most important finding from our data: course format matters more than content quality for predicting whether students finish. Scheduled cohort courses outperform self-paced courses by 11 percentage points — a consistent gap across niches and price points.
For context, the median MOOC completion rate is 12.6% according to Class Central. Even our lowest-performing format (self-paced open access) is 3-4x higher than marketplace platforms. The difference is the instructor relationship and community structure that comes with hosted platforms versus anonymous marketplaces. For a deeper dive, see Cohort vs Self-Paced: What the Data Shows.
Assessment Impact on Completion
Courses that include quizzes, polls, or assignments see a 15 percentage point lift in completion — the largest single-feature impact in our data.
Across the platform, 7,500+ courses use at least one assessment type. The breakdown: 14,100 quiz lessons, 16,900 poll lessons, and 9,200 assignment lessons — totaling 732,000 student submissions. Skool, for comparison, offers no assessment features on any plan.
Discussion Impact on Completion
Community discussion is the most researched predictor of online course success. Our platform data confirms the academic literature.
Scheduled courses generate dramatically more discussion: an average of 311 comments per course, compared to 83 for self-paced. The 9.1 million total comments across the platform — with 85% of published courses having discussions enabled — suggest that community is the norm, not the exception, for courses built on Ruzuku.
Cohort Size Sweet Spot
Not all cohorts perform equally. When we break down completion rates by group size for scheduled courses, a clear pattern emerges:
| Cohort Size | Courses | Avg Completion |
|---|---|---|
| 1-10 students | 3,911 | 50.3% |
| 11-25 students | 2,865 | 65.8% |
| 26-50 students | 1,452 | 61.8% |
| 51-100 students | 749 | 57.1% |
| 100+ students | 702 | 51.8% |
The 11-25 student range is the sweet spot — large enough for rich peer dynamics, small enough that each student feels accountable. Both very small groups (1-10) and very large groups (100+) see lower completion rates, for different reasons: small groups may lack the social energy to sustain engagement, while large groups dilute individual accountability.
First-Week Engagement
The strongest predictor of completion in our data isn't course format, assessments, or group size. It's whether the student does anything in the first seven days.
That's a 14x difference. Students who complete at least one lesson in week one go on to finish at a 70% rate. Students who don't engage at all in week one have a 4.9% chance of ever completing. If you do nothing else with your course design, focus on getting students to take action in the first week. A welcome assignment, an introductory discussion prompt, a quick win exercise — anything that creates momentum.
Pricing Benchmarks
The gap between median ($110) and mean ($416) reveals the long tail: a significant number of high-touch programs — certification courses, coaching cohorts, professional development — command $500-$5,000+. The coaching median ($531) is nearly 5x the platform-wide median, driven by transformation specificity and instructor involvement, not production quality.
Other pricing data: 24.6% of course price options are free. The median one-time payment is $99. The median subscription is $49.99/month. For detailed pricing guidance, see the Complete Course Pricing Guide.
Time to Completion
The contrast is striking. Cohort students work through material over roughly a month — a pace that allows for reflection, practice, and peer discussion. Self-paced students who do finish tend to binge the content in under a week. Both are "completion," but they represent very different learning experiences. The median creator on Ruzuku has published 8 courses, suggesting that the multi-course model — not one-shot — is how sustainable course businesses work.
Methodology and Limitations
Frequently Asked Questions
What is the Ruzuku Course Success Index?
First-party data from 32,000+ courses hosted on Ruzuku over 14 years — completion rates, engagement benchmarks, pricing data, and cohort sizing. Unlike industry surveys, this data comes directly from production platform analytics.
What is the average online course completion rate?
On Ruzuku, overall completion is 48.9%. Cohort courses average 53.7%, and courses with assessments reach 59%. The industry benchmark for self-paced MOOCs is 12.6% (Class Central).
What is the ideal cohort size for an online course?
Based on our data, 11-25 students is the sweet spot at 65.8% completion. Both smaller (1-10) and larger (100+) groups see lower rates around 50-52%.
How much should I charge for an online course?
The median paid course on Ruzuku is $110. Coaching courses average $531. Price is driven by transformation specificity, not course length or production quality.
How often is the Course Success Index updated?
Data is drawn from the production database and refreshed periodically. Current data reflects 14 years of history through early 2026.