An alum says, “Happy to run a case with you sometime.”
Great.
Free case practice.
But that may not be the most valuable part of the offer.
They are about to see how you think.
A coffee chat lets someone hear your story. A mock case lets them watch what happens when the answer is not obvious.
Those are very different levels of evidence.
Do not treat the mock case like a free tutoring session
You might be tempted to arrive underprepared because the alum is “just helping.”
That wastes the opportunity.
They are going to see whether you can structure ambiguity, listen, calculate cleanly, react to feedback, and communicate a recommendation.
Not necessarily because they are secretly interviewing you.
Because those behaviors are impossible to hide once you start solving a case together.
The alum suddenly learns far more about you than they could from your resume.
Your performance becomes part of the relationship.
That means preparation matters.
Before the call, know the basic case format. Practise opening structures, mental math, exhibit interpretation, and synthesis enough that the session can reveal higher-value feedback rather than basic mechanics.
For a complete setup, read How to Prepare for a Mock Consulting Case Interview.
The strongest moment may come after you make a mistake
Here is the strange part.
You do not need to ace every calculation.
A mock case can become more impressive after something goes wrong.
Suppose you misread a chart.
The alum corrects you.
What happens next?
| Your reaction | What they may learn | Better signal |
|---|---|---|
| Defend the original answer | You cling to your first view | Reassess quickly |
| Apologize for 30 seconds | Pressure disrupts you | Acknowledge, fix, continue |
| Ask for the answer | You surrender ownership | Use the hint and solve |
| Incorporate feedback immediately | You adapt | Coachability becomes visible |
Consulting is full of course correction.
A manager challenges the analysis. A client rejects an assumption. New data changes the hypothesis.
Your ability to adjust may tell the alum more than a flawless rehearsed framework.
But do not turn the session into another referral ask
Students sometimes see the offer to case as a green light:
“They must like me. I should ask for the referral immediately afterward.”
Maybe.
But first, do the case.
Be present.
Take the feedback seriously.
Ask where your reasoning broke down.
Write down the two or three changes you need to make.
Then send a short thank-you.
If the relationship continues naturally, the referral discussion may become much easier because the alum now has direct evidence of how you operate.
Let the case create the evidence.
Do not smother it with an immediate transaction.
What is the alum actually watching?
Usually, the interesting part is not whether you have memorized a particular framework.
It is whether you can move from information to implication.
You see a profitability decline.
So what?
You calculate that one segment drives most of the drop.
So what?
You notice pricing is stable but volume collapsed.
What would you investigate next?
That movement from observation to decision is the heart of case performance.
For a deeper explanation of the signals sitting underneath the case, read Case Interview: What Interviewers Look For.
The offer itself is already useful information
An alum who offers to spend 45 or 60 minutes casing you is giving something scarcer than a LinkedIn like.
Time.
That does not automatically mean they will refer you.
And it certainly does not mean you should treat the session as a hidden interview.
But it does mean they are willing to invest in your progress.
Take the investment seriously.
Prepare enough to make the feedback useful.
Show that you can absorb it.
Then improve before the next case.
Because sometimes the person who first offered to practise with you becomes the person who later has a much easier answer to a different question:
“Would you feel comfortable referring me?”