- The 70% Passing Score, Explained
- How Scoring Works Across Two Parts
- What the Questions Actually Look Like
- Open-Book Rules That Affect Your Score
- Domain-by-Domain Breakdown
- Registration, Fees, and Score Validity
- Building a Study Plan Around the 70% Target
- After You Pass: License Term and Renewal
- Frequently Asked Questions
- You need 70% on both Part 1 (110 questions) and Part 2 (132 questions) to earn your Master Plumber license.
- Each part is a separate $95 exam administered by Pearson VUE at one of six Wisconsin testing centers.
- Only DSPS-approved bound references are allowed - no loose paper, tabs, sticky notes, or practice exams.
- Part 2 carries more content weight than Part 1, so plan your review time accordingly.
The 70% Passing Score, Explained
The Wisconsin Department of Safety and Professional Services (DSPS) sets a single, unambiguous benchmark for the Wisconsin Master Plumber License Examination: 70% on each part. There's no sliding scale, no scaled scoring model, and no bonus credit for difficult questions. You either answer enough questions correctly on Part 1 and Part 2 individually, or you don't move forward toward licensure.
This flat percentage threshold is easy to state but easy to misjudge in practice. Candidates sometimes assume that a strong score on one part can offset a weak score on the other. It can't. Part 1 and Part 2 are graded independently, and each one has to clear 70% on its own. If you're building your prep timeline, the WI-MP Study Guide 2026: How to Pass on Your First Attempt walks through how to structure review sessions so neither part gets shortchanged.
How Scoring Works Across Two Parts
The exam is split into two distinct sittings, each administered by Pearson VUE with its own time limit, question count, and $95 fee:
- Part 1: 110 questions, 4-hour time limit
- Part 2: 132 questions, 4-hour time limit
Because Part 2 has more questions and, per DSPS structure, represents the larger share of overall exam content, many candidates find it takes noticeably more preparation time to reach the 70% mark there. If you've been wondering how the two parts differ in scope, the WI-MP Exam Domains 2026: Complete Guide to All 2 Content Areas breaks down what each part actually covers in depth.
Both parts must be scheduled and paid for separately - there's no single combined registration fee that covers both sittings. If you're mapping out your total investment before you commit, the WI-MP Certification Cost 2026: Complete Pricing Breakdown lays out every fee tied to the licensing process, from initial application through renewal.
Domain 1: Master Plumber - Part 1
Part 1 is your first 4-hour, 110-question sitting. A 70% score here is required before that result can count toward licensure, and it's graded completely independently from Part 2.
- 110 scored questions in a fixed 4-hour window
- Open-book format using only DSPS-approved bound references
- $95 exam fee, paid separately from Part 2
Domain 2: Master Plumber - Part 2
Part 2 is the longer, more heavily weighted portion of the exam, with 132 questions in the same 4-hour format. Because it represents the larger share of the overall Master Plumber exam content, most candidates need to devote extra review time here to reliably clear 70%.
- 132 scored questions in 4 hours - the largest single component of the exam
- Same open-book rules and $95 fee structure as Part 1
- Requires its own independent 70% score to pass
What the Questions Actually Look Like
The Wisconsin Master Plumber exam is administered on computer at Pearson VUE's in-state testing centers - there are six locations across Wisconsin where candidates can sit for either part. Both parts are timed at 4 hours, which gives you roughly two minutes per question on Part 1 and slightly less on Part 2 given the higher question count. Pacing matters: running out of time before reaching every question is one of the more avoidable ways to miss the 70% threshold.
Because the exam draws directly from Wisconsin's plumbing code and approved reference material, question style tends to reward candidates who know how to locate and apply code language quickly rather than those who've simply memorized numbers in isolation. That's a key reason the How Hard Is the WI-MP Exam? Complete Difficulty Guide 2026 article emphasizes reference navigation speed as much as raw content knowledge.
Key Takeaway
Speed with your approved references matters as much as knowing the material - practice locating code sections quickly, not just reading them once.
Open-Book Rules That Affect Your Score
Both parts of the Wisconsin Master Plumber License Examination are open book, but "open book" comes with strict limits that directly affect how efficiently you can hit 70%. DSPS permits only approved bound references and notes. That means:
- No loose paper of any kind
- No removable tabs or sticky notes
- No paperclips holding pages together
- No practice exams brought into the room
- Architect and engineer scale rulers are allowed
This matters for your score because candidates who show up with disorganized or non-compliant materials lose valuable minutes fumbling through unfamiliar pages - or have materials confiscated at check-in. Building familiarity with your specific approved reference set, in its bound form, before test day is part of scoring well within the 4-hour window. For a condensed reference of exactly what's allowed and what commonly trips people up, see the WI-MP Cheat Sheet 2026: One-Page Review of Must-Know Facts.
Domain-by-Domain Breakdown for Score Planning
Since Part 1 and Part 2 are graded separately, it helps to think of your prep as two distinct score-building projects rather than one combined effort. Here's how the two compare at a glance:
| Attribute | Part 1 | Part 2 |
|---|---|---|
| Question count | 110 | 132 |
| Time limit | 4 hours | 4 hours |
| Fee | $95 | $95 |
| Passing score | 70% | 70% |
| Content share | Smaller portion | Larger portion |
Because Part 2 carries the larger share of content, a common mistake is spending equal time on both parts rather than weighting review toward Part 2's broader scope. If you're unsure which specific topics fall under each part, the WI-MP Exam Domains 2026: Complete Guide to All 2 Content Areas is the more detailed companion piece to this one.
Registration, Fees, and Score Validity
Before you can sit for either part, you need to meet Wisconsin's eligibility path - most commonly at least 1,000 hours per year working as a licensed Wisconsin Journeyman Plumber for three years, or holding an approved plumbing-related engineering degree. Wisconsin also offers comity pathways for candidates coming from qualifying out-of-state apprenticeships, licenses, or experience. The WI-MP Requirements 2026: Eligibility, Prerequisites & How to Qualify article covers each pathway in detail if you're still confirming eligibility.
Once you're eligible, each part is scheduled and paid for individually at $95 through Pearson VUE, at any of the six approved Wisconsin testing centers. A passing result on either part remains valid for one year - so if you pass Part 1 but need another attempt at Part 2, that clock is running. Plan your retake or second-part scheduling with that one-year window in mind; letting it lapse means your passing score no longer counts and you'd need to sit for that part again from scratch.
If you're still deciding when to schedule around work commitments or testing center availability, the WI-MP Exam Dates 2026: Testing Windows, Deadlines & Scheduling guide covers how Pearson VUE scheduling works for this exam specifically.
Key Takeaway
A passing score is only good for one year - don't let a passed Part 1 or Part 2 expire while you delay scheduling the other half.
Building a Study Plan Around the 70% Target
A simple, phased approach works well precisely because the two parts are scored independently. Rather than reviewing everything at once, sequence your weeks so each part gets focused, uninterrupted attention before you shift to the next.
Part 1 Foundations
- Review Part 1 content areas and identify weak spots against the 110-question scope
- Practice navigating your bound reference set quickly under timed conditions
Part 2 Deep Dive
- Dedicate extra time here since Part 2's 132 questions cover the larger content share
- Run full 4-hour timed practice sessions to build stamina and pacing
Final Review and Scheduling
- Confirm your Pearson VUE testing center and appointment for both parts
- Do a final pass on reference material organization to avoid check-in issues
For a more thorough walkthrough of pacing, reference organization, and common pitfalls specific to this exam, the WI-MP Study Guide 2026: How to Pass on Your First Attempt expands on each of these phases. You can also run realistic timed sessions using practice questions on our WI-MP practice test platform to get comfortable with the pacing before test day.
After You Pass: License Term and Renewal
Clearing 70% on both parts gets your Master Plumber license issued through DSPS, but the scoring story doesn't fully end there. The Wisconsin Master Plumber license runs on a four-year term, expiring March 31, and renews for a $500 fee alongside 24 hours of approved continuing education. Passing the exam is the entry point - staying licensed means tracking your renewal date and CE hours well ahead of expiration.
If you're weighing whether the time and cost of preparing for this exam pays off long-term, the Is the WI-MP Certification Worth It? Complete ROI Analysis 2026 article and the WI-MP Salary Guide 2026: Complete Earnings Analysis both look at what a Master Plumber license opens up on the job market side. And once you've got the credential, WI-MP Jobs covers where licensed Master Plumbers typically find work in Wisconsin.
For candidates who want a broader look at how the exam experience feels day-to-day beyond the passing score itself, WI-MP Pass Rate 2026: What the Data Shows and How Hard Is the WI-MP Exam? Complete Difficulty Guide 2026 are useful companion reads. You can also start practicing right away over on the main practice test hub to see where you stand against the 70% target before committing to a test date.
Frequently Asked Questions
Yes. Both Part 1 (110 questions) and Part 2 (132 questions) require a 70% score, graded independently. A high score on one part does not offset a lower score on the other.
No. Part 1 and Part 2 are scheduled and paid for separately, each with its own $95 fee and 4-hour time limit. You can take them on different days, as long as you complete both within the one-year validity window of your first passing score.
Your passing result on the completed part stays valid for one year, giving you time to retake the other part. Once that year lapses, the passing score no longer counts and that part must be retaken.
Only if they're part of a DSPS-approved bound reference. Loose paper, sticky notes, removable tabs, and paperclips are not allowed, though architect and engineer scale rulers are permitted.
The exam is administered by Pearson VUE at six in-state Wisconsin testing centers. Both Part 1 and Part 2 can be scheduled at any approved location.