Author: Taylor Warfield, Former Bain Manager and interviewer

Last Updated: September 21, 2026

 

The Stern casebook is a free collection of practice consulting cases published each year by NYU Stern's Management Consulting Association, and it works best as a drilling tool for math, exhibits, and structure rather than a set of answers to memorize. This guide covers what sits inside each edition, which version to download, and the practice routine that turns those cases into a sharper interview performance.

 

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Key Takeaways

 

The Stern casebook gives you 24 to 30 full practice cases plus a casing math primer, 14 industry overviews, and a self-scoring rubric, all at no cost.

You can download the casebook here: Stern 2024.pdf

 

• Recent editions carry 30 practice cases sorted into easy, medium, and hard tiers

 

• Every case is tagged with its type, industry, difficulty, and whether it runs interviewer-led or interviewee-led

 

• A handful of cases name the firm and round they came from, including McKinsey and BCG first rounds

 

• The industry overview section is the most underused part of the book and the fastest way to build business intuition

 

• Market sizing constants in older editions are stale, so refresh them before you drill

 

• The built-in feedback form doubles as a scoring rubric for solo practice

 

What Is the Stern Casebook?

 

The Stern casebook is a free practice case collection published annually by the NYU Stern Management Consulting Association, the MBA consulting club at New York University. Each edition contains a primer on case interview mechanics, a casing math section, industry overviews, a scoring rubric, and roughly 24 to 30 full practice cases with exhibits and detailed interviewer notes.

 

Stern's club has produced a casebook since at least 2006. Early editions circulated under the title "Torch the Case" and organized cases into student-authored, market sizing, and firm-contributed sections. Modern editions dropped that name and settled into a five-part structure that repeats year to year, with recent versions running past 300 pages.

 

Who wrote each case matters more than most candidates realize. Some cases come from consulting firms that sponsor the club, and others are written by second-year MBAs who just finished recruiting. The firm-contributed cases track a real interview far more closely, which is why the book labels several of them with the firm and round they came from.

 

Consulting is one of the two dominant career paths at Stern, which is why the club keeps the book current. NYU Stern's employment data shows 32.8% of the Class of 2025 entering consulting, second only to finance at 36.6%.

 

The recruiting pressure behind that number is real. McKinsey, BCG, and Bain hired 30 members of the Class of 2025, up from 21 the prior year, according to a January 2026 GMAC review of Stern's employment report.

 

Stern's published employer list names more than 30 consulting firms that have hired its MBAs, spanning the big three, the Big Four strategy arms, and boutiques. That breadth explains why the casebook covers case types and industries a purely MBB-focused book would skip.

 

What Is Inside the Stern Casebook?

 

The Stern casebook is organized into five sections: an introduction to casing, a casing math primer, industry overviews, a feedback form, and the practice cases themselves. The first four sections take up roughly 40 pages and the cases fill everything after that.

 

Section	What you get	How to use it
Intro to Casing	13 common case topics, a 5-step case flow with timings, interviewer-led versus interviewee-led formats	Read once for orientation, then move on
Casing Math	Net present value, breakeven, percent change, rule of 72, return on investment, margins, markups, inventory turns, market sizing constants	Memorize the formulas, replace the stale constants
Industry Overviews	14 industries with revenue drivers, cost drivers, key metrics, and current trends	Review the industry before every case you take in it
Feedback Form	A 1 to 3 rating scale across structure, quantitative ability, communication, and business judgment	Score every case you do, including solo reps
Practice Cases	24 to 30 full cases with prompts, exhibits, math solutions, brainstorm answers, and sample recommendations	Drill in difficulty order, not book order

 

What does the Intro to Casing section cover?

 

This section maps the case into five stages: structure the problem, develop a hypothesis, deep dive, develop a solution, and synthesize. It assigns rough timings to each, with the deep dive taking about 15 minutes of a 25 minute case.

 

It also splits interviews into two formats. "Go with the flow" cases put you in the driver's seat, while command and control cases have the interviewer steer, which is how the book describes McKinsey's approach.

 

The one thing it does not do is teach you how to build a structure from scratch. It tells you to be MECE, add two levels of depth, and avoid forcing a memorized template, then leaves you to figure out the method. That gap is why most candidates need a real system for building case interview frameworks before the cases become useful.

 

What is in the Casing Math section?

 

The math primer runs about six pages and is denser than most casebook math sections. It covers net present value for both perpetuities and annuities, breakeven, percent change, the rule of 72, return on investment, gross and operating and net margin, markup versus margin, and inventory turns.

 

It also gives you a fractions-to-decimals conversion table and tells you to know your multiplication tables through 20 by 20. That is a higher bar than most books set, and it is the right bar.

 

The market sizing subsection includes a constants list covering US population, households, life expectancy, gross domestic product, and continent-level populations. Treat that list as a template rather than a source, since the figures were current when the older editions shipped and have drifted since.

 

Why are the industry overviews worth reading?

 

This is the most valuable and most skipped section in the book. It profiles 14 industries: banking and financial services, retail, consumer packaged goods, technology, healthcare providers, healthcare payers, life sciences and pharma, airlines, media and entertainment, oil and gas, industrials, grocery, non-profit, and private equity.

 

Each profile gives you revenue drivers, cost drivers, key metrics, and industry trends on a single page. The airline page tells you load factor is the metric that matters. The retail page hands you a revenue equation of traffic times conversion rate times basket size times average price per item.

 

Having coached hundreds of candidates, I can tell you the fastest fix for a candidate whose frameworks feel generic is exactly this kind of drilling. Reading the relevant page for 90 seconds before you start a case is the cheapest way to build business acumen that shows up in your buckets.

 

How does the feedback form work?

 

The casebook includes a three-page evaluation form built around four categories: case setup and structure, quantitative abilities, communication and team skills, and business acumen and creativity. Each line item is scored 1 for needs improvement, 2 for good, and 3 for excellent.

 

The form closes by asking the interviewer to circle your two biggest strengths and two biggest weaknesses. That forced ranking is more useful than the scores, because it stops a partner from giving you vague encouragement.

 

Self-scoring has a ceiling, though. You cannot catch the habits you do not know are habits, which is where 1-on-1 interview coaching with someone who has sat on the other side of the table pays for itself.

 

How are the practice cases structured?

 

Each case opens with a cover page listing the author, the industry, the case type, the concepts tested, the difficulty, and whether the case runs interviewer-led or interviewee-led. Some also name the firm and round, such as BCG Round 1 or McKinsey Round 1.

 

From there you get the prompt, clarifying information the interviewer releases only on request, an interviewer guide describing what a good framework versus a great framework includes, the quantitative questions with worked solutions, brainstorming prompts with model answers, a recommendation, risks, and next steps.

 

Most cases end with a short "guide to an excellent case" block. That block is the single most useful paragraph in each case, because it tells you what separated a strong candidate from an average one on that specific problem. In my years interviewing candidates at Bain, that gap was almost never the arithmetic.

 

How Many Cases Does the Stern Casebook Have and How Are They Rated?

 

The case count and the rating system both changed over time. Older editions score each case on two separate 1 to 10 scales, while newer editions collapse that into a single easy, medium, or hard label.

 

Edition	Practice cases	Difficulty system	Best for
2025-2026	30	Easy, medium, and hard tiers, ordered easiest first	Building a ramp from your first case to interview-level difficulty
2020-2021	24	Separate quant and structure scores from 1 to 10	Targeting a specific weakness, since math and structure are rated apart
Torch the Case era	16 to 20	Easy, medium, and hard labels	Extra market sizing reps and firm-provided cases

 

The 2025-2026 edition covers a wide spread of case types: opportunity assessment, cost reduction, profitability, market entry, cost benefit analysis, revenue growth, growth strategy, investment decision, private equity, mergers and acquisitions, operations, and change management. Industries range from waste management and storage to archaeology and government.

 

The two-score system in the older editions is genuinely better for targeted practice. A case rated quant 9 and structure 4 is a math workout, and a case rated quant 4 and structure 8 is a structuring workout. You can pick your reps deliberately instead of guessing.

 

Which Edition of the Stern Casebook Should You Download?

 

Use the most recent edition you can find, then pull the 2020-2021 edition as a second source. The newest book has fresher industry data and a cleaner difficulty ramp, while the older one gives you the two-score rating system and a different set of cases.

 

The current edition normally lives on the club's own portal, which requires a Stern login. Older editions are widely mirrored on document sharing sites, which is where most non-Stern candidates end up finding them.

 

Do not chase every edition. The intro, math, feedback, and industry sections are close to identical from year to year, so downloading six editions buys you extra cases and nothing else.

 

How Should You Practice With the Stern Casebook?

 

Work each case as a timed, closed-book rep and score yourself with the feedback form immediately after. The mistake almost everyone makes is reading cases instead of doing them, which builds recognition rather than skill.

 

1. Read the industry page first: spend 90 seconds on the matching industry overview so you enter the case with real drivers in your head
   
   
2. Set a timer for 25 minutes: that is the length the casebook itself assigns to a standard case, and working untimed hides your real weaknesses
   
   
3. Cover the interviewer notes: read only the prompt and any exhibit you would have been handed, then write your structure before looking at anything else
   
   
4. Say your answer out loud: silent thinking hides the communication problems that actually cost people offers
   
   
5. Compare against the excellent case block: check what the book says separated a great candidate from a good one, not just whether your number matched
   
   
6. Score yourself on the feedback form: circle two strengths and two weaknesses, then pick your next case to attack one of the weaknesses

 

Interviewer-led cases work better when you are alone, since the questions arrive in a fixed sequence you can follow. Save the interviewee-led cases for a partner, or adapt them using the same techniques that make it possible to practice case interviews by yourself.

 

Which Stern Cases Should You Start With?

 

Start with a profitability case, then a market entry case, then something quant-heavy. Those three cover the largest share of what firms actually ask, and the Stern book has strong examples of each.

 

Case type	What it drills	Stern cases to look for
Profitability	Revenue and cost trees, income statement reading, segmentation	Tres Burritos, Apartment Co.
Market entry	Market sizing, competitive dynamics, entry mode	Chococo, WiFi in the Sky, Uranus Co.
Pricing	Business model comparison, margin math, qualitative trade-offs	The Pricing Games, Grad-U-Date
Growth strategy	Compound growth, product mix, geographic expansion	FlashPro, Men's Extra Comfortable Essentials
Cost reduction	Benchmarking, headcount math, implementation risk	Stance at a Distance, Steel Co.
Operations	Process flow, yield loss, marginal cost reasoning	Fungicide

 

The Fungicide case deserves a specific callout. It walks a candidate through a manufacturing line with yield losses at two stages and a waste scrubber with a fixed cost per cycle, then asks how running a third batch changes marginal economics.

 

That case is harder than most first-round interviews and better than most casebook cases at teaching you to reason about a process rather than a formula. A profitability case that forces you to trace physical units through a system is worth three that hand you a clean income statement.

 

If you are targeting a firm that runs interviewer-led cases, filter for that tag first. Several Stern cases are explicitly labeled as first-round cases in the style of specific firms, which makes them the closest thing in the book to a real McKinsey case interview.

 

What Are the Weaknesses of the Stern Casebook?

 

The Stern casebook's biggest weaknesses are aging reference data, uneven case quality, and no instruction on how to build a structure. None of these make the book useless, but all of them will cost you if you do not correct for them.

 

• Stale market sizing constants: the older editions list figures for population, gross domestic product, and household income that were current years ago, so verify anything you plan to quote in an interview

 

• Uneven case realism: student-written cases sit next to firm-contributed cases with no obvious marker beyond the author line, and the two are not equally representative

 

• No framework method: the book tells you what a good framework contains for each specific case but never teaches a repeatable way to build one

 

• Thin fit interview coverage: the casebook is a case book, so behavioral preparation is barely mentioned despite fit questions carrying real weight in every round

 

• Model answers that reward recognition: reading the solution before you attempt the case feels productive and teaches you almost nothing

 

The framework gap is the one that hurts most. Learning what a great framework looked like on 30 specific cases does not tell you how to build one on the thirty-first, which is the actual test. My case interview course teaches the structuring method the casebook assumes you already have.

 

How Does the Stern Casebook Compare to Other MBA Casebooks?

 

The Stern casebook's edge is its industry overview section and its firm-labeled cases. Where it lags is depth of coaching on how to actually improve, which several other books handle better.

 

Casebook	Biggest strength	Use it when
Stern	14 industry primers and cases tagged by firm and round	Your frameworks feel generic and you need industry depth
Booth	Quant-heavy cases and a detailed evaluation rubric	Math speed is your bottleneck
Kellogg	Cases sequenced from easy to hard with strong front matter	You are starting from zero
Columbia	Every case tagged with the exact concept it tests	You want to drill one skill at a time

 

Pair the Stern book with one other. Running the Kellogg casebook first and Stern second gives you a gentle on-ramp followed by harder, more industry-specific problems.

 

Variety beats volume here. In my experience coaching candidates, someone who does 10 cases across three MBA consulting casebooks outperforms someone who does 25 from a single book, because the second candidate has absorbed one club's house style rather than the underlying skill.

 

What Tips Help You Get the Most Out of the Stern Casebook?

 

Tip #1: Rebuild the market sizing constants before you drill

 

Take the constants list and replace every figure with a current one you sourced yourself. You will remember numbers you looked up far better than numbers you copied, and you will not quote a stale population figure in a live interview.

 

Tip #2: Do the math structure out loud before calculating

 

The casebook tells interviewers to look for candidates who write the formula in words and get buy-in before touching numbers. Practice that habit on every quant question, because interviewers score the approach more heavily than the arithmetic.

 

Tip #3: Filter cases by the concepts tested tag

 

Every case lists the specific concepts it tests, such as breakeven, chart reading, or market penetration. Use that tag to build a targeted set of five cases hitting one weakness instead of working through the book in order.

 

Tip #4: Practice the recommendation under time pressure

 

The casebook warns about the "elevator test," where the interviewer gives you no time to collect your thoughts before asking for a conclusion. Deliver your case interview recommendation within five seconds of finishing the last calculation on at least half your reps.

 

Tip #5: Redo your three worst cases a week later

 

Most candidates never revisit a case, which wastes the diagnostic value of the ones they bombed. Redoing a case you failed exposes whether you fixed the underlying gap or just remembered the answer.

 

Tip #6: Give cases as often as you take them

 

The interviewer guides in this book are unusually detailed, which makes giving a case a genuine learning exercise. Reading what a great framework contains while watching a partner miss half of it teaches you more about structure than solving the case yourself.

 

The Stern casebook is one of the better free resources available for consulting interview preparation, and the industry overviews alone justify the download. Pick the newest edition you can find, run six timed cases against the feedback form this week, and use your two circled weaknesses to choose what you drill next.

 

Frequently Asked Questions

 

Is the Stern casebook free?

 

Yes. The NYU Stern Management Consulting Association produces the casebook for its own members and does not sell it. Older editions circulate freely on document sharing sites, while the newest edition is usually posted on the club portal, which requires a Stern login.

You can download the casebook here: Stern 2024.pdf

 

How many cases are in the Stern casebook?

 

The count moves from year to year. The 2020-2021 edition holds 24 practice cases and the 2025-2026 edition holds 30. Older editions from the Torch the Case era carry fewer cases but add a separate market sizing section.

 

Is the Stern casebook good for McKinsey interviews?

 

It is useful but incomplete. The casebook flags which cases follow an interviewer-led format and a handful are labeled with the firm and round they came from, including McKinsey first rounds. It does not cover the McKinsey Solve assessment or the Personal Experience Interview, so pair it with McKinsey-specific prep.

 

Do you need to be an NYU Stern student to use the casebook?

 

No. Nothing in the cases assumes Stern coursework or Stern-only data. Undergraduates, career switchers, and candidates at other schools can use the same cases, since firms run the same interview format regardless of where you studied.

 

How many Stern cases should you do before an interview?

 

Plan on 25 to 30 full cases before a first round, drawn from several casebooks rather than one. Roughly 8 to 10 of those can come from the Stern casebook. Doing every case in a single book teaches you that book's habits instead of the underlying skill.

 

Can you use the Stern casebook without a practice partner?

 

Yes, with one adjustment. Read only the prompt and the exhibits, cover the interviewer notes, and write your full answer before you look at the solution. Interviewer-led cases work better solo because the questions are already sequenced for you.

 

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