Sooner or later, the CFO asks: "What are we getting back from this?" Classic formulas (Kirkpatrick 4-level, ROI = (benefits – costs) / costs) sound great in a textbook. In practice they don't answer the real question — do employees actually behave differently after the training.
Why the classic ROI formula doesn't work
The classic formula: ROI = (cash benefit – cost) / cost × 100. Problems:
- "Cash benefit" is in 90 % of cases unmeasured guesswork ("we saved 20 hours per employee")
- Training costs are clear, benefits are not — so every calculation comes out positive
- It doesn't show why the training worked or didn't
The reality: for B2B SMB, training ROI isn't a cash category. It's a behavioural one.
Three metrics that actually count
1. Completion rate within 14 days
How many of the assigned employees actually finish the module within 2 weeks of assignment.
- < 60 %: training isn't relevant, or the content is too long. Break it into smaller pieces.
- 60–80 %: healthy. Team leads should nudge 2–3 days before the deadline.
- > 80 %: the content is shaped to a format employees can handle.
This is the only metric that shows whether training is happening at all. The rest are derivatives.
2. Quiz score on the second attempt
The first quiz attempt shows what the employee understood from the content. The second attempt (after failing) shows whether they're willing to go back into the content and correct their understanding.
- 80 %+ on the second attempt = content works
- < 50 % on the second attempt = the content or the quiz is poorly written (not the employee)
Track both. The average of the two is more realistic than the average first-attempt score.
3. Behavioural check after 30 days
This is the key. 30 days after the training, email the employee's manager one email with one question:
"In the last 30 days, have you noticed [person] using [specific skill from the training] in their work? Yes / No / Partially"
Three reasons this works:
- The manager is close enough to the behaviour that they don't have to guess
- One question = 30-second task, response rate 70 %+
- After 30 days, habituation (or lack of it) is clear
If < 50 % of managers confirm a behavioural change, the training was entertainment, not learning. Rebuild the content with more concrete exercises.
Concrete example: compliance training (GDPR basics)
- Completion rate within 14 days: 92 % (good — short module, managers nudged)
- Average quiz score (both attempts): 87 %
- Behavioural check at 30 days: 78 % of managers confirm the employee referenced GDPR at least once when handling personal data
Verdict: it works. No spreadsheet. No 5-level Kirkpatrick.
Concrete example: sales training
- Completion rate within 14 days: 67 % (borderline)
- Average quiz score: 72 % (quiz too easy, content complex — not measuring the actual skills)
- Behavioural check at 30 days: 41 % of managers confirm use of the new method
Verdict: doesn't work. Content is too generic; the salesperson understands it in theory but doesn't use it in the field. Next step: replace the quiz with role-play exercises (1:1 with a senior, recorded, rated).
How to track this without manual work
Three metrics on their own are useless if you have to collect them by hand. A modern LMS does this automatically:
- Completion rate → dashboard by default
- Quiz score → audit log with first + second attempt
- Behavioural check → automatic email to the manager 30 days after completion, with a 1-click response
Without automation, training ROI degrades back to "guesswork + Excel". With automation, every module becomes a measurable experiment.
In short
- The classic ROI formula is for academic reading, not decisions
- Three real metrics: completion within 14 days, quiz score on attempt 2, behavioural check at 30 days
- Each metric has a clear threshold — below it, fix the content, don't blame the employee
- Without automation the measurement doesn't happen; that's the case for a structured LMS
If you're looking for a platform that tracks these three metrics automatically and sends the 30-day manager survey without your involvement, Mentor offers a free 14-day trial.