CSSBB Body of Knowledge 2026: Nine Sections and a Project Gate
Measure and Analyze alone are 47 of the 150 scored questions, and 22 of the BoK's 28 Evaluate-level subtopics sit in those two sections. An open book will not do that thinking for you.
- 165 (150 scored)Questions
- 4h 18mTime
- 9Sections
- YesWeights published
- 550/750Pass mark
- $485-$585Fee
Table of Contents
The whole paper in one bar
The 2022 CSSBB Body of Knowledge, tested since September 2022 is the exam guide ASQ publishes for Certified Six Sigma Black Belt (CSSBB), restated so you can see the shape of the paper before you read a word of the detail. The bar below is the entire syllabus: 9 sections, in the order the certifying body lists them.
- §1 Organization-Wide Planning and Deployment — 12 items (8.0%)
- §2 Organizational Process Management and Measures — 12 items (8.0%)
- §3 Team Management — 15 items (10.0%)
- §4 Define — 20 items (13.3%)
- §5 Measure — 25 items (16.7%)
- §6 Analyze — 22 items (14.7%)
- §7 Improve — 21 items (14.0%)
- §8 Control — 17 items (11.3%)
- §9 Design for Six Sigma (DFSS) Framework and Methodologies — 6 items (4.0%)
Those percentages are derived from ASQ’s own published question counts, not an estimate. That matters more than it sounds: most pages ranking for this query quote weightings the certifying body never published.
The syllabus, section by section
Each block below is one section of the official outline. The bullets are the sub-objectives ASQ publishes underneath it — the actual scope statement, not a summary of it.
Organization-Wide Planning and Deployment
- Six Sigma and lean fundamentals; lean six sigma maturity model
- When to use Six Sigma; project screening and selection criteria
- Relationships among business systems, processes and stakeholders
- Strategic planning for initiatives: ROI, SWOT, contingency and business continuity planning
- Roles of executives, champions, sponsors, process owners, Master Black Belts, Black Belts and Green Belts
- Organisational barriers and common causes of Six Sigma failure
- Change management: stakeholder analysis, readiness assessment, communication plans
Organizational Process Management and Measures
- Impact of projects on customers, suppliers and other stakeholders
- Benchmarking: best practice, competitive, collaborative, breakthrough
- Balanced scorecard, KPIs, KBIs, OKRs, customer loyalty metrics
- Leading and lagging indicators; line of sight to strategy
- Financial measures: revenue growth, margin, NPV, ROI, cost-benefit analysis
- Hard savings versus soft cost-avoidance benefits
Team Management
- Team types: virtual, cross-functional, self-directed
- Team roles, member selection criteria and success factors
- Motivation, stages of team development, communication plans
- Leadership models: direct, coach, support, delegate
- Group behaviours and conflict resolution
- Meeting management and decision tools: consensus, nominal group technique, multivoting
- Team training: needs assessment, delivery, evaluation
Define
- Customer identification and segmentation
- Voice of the customer data collection and its validity
- Customer requirements: CTX, CTQ tree, QFD, SIPOC, Kano model
- Business case, problem statement, project scope and SMART goals
- Project performance measures and charter reviews
- Project management tools: Gantt charts, toll-gate reviews, WBS, RACI
- Analytical tools: affinity, tree and matrix diagrams, prioritisation matrices, PDPC, interrelationship digraph
Measure
- Process flow metrics (WIP, takt time, cycle time, throughput) and hidden factories
- Process analysis tools: value stream maps, process maps, spaghetti diagrams, gemba walk
- Data types, measurement scales, sampling methods and data collection plans
- Measurement system analysis: gauge R&R, bias, linearity, attribute agreement; metrology
- Basic statistics, central limit theorem and graphical methods
- Probability and distributions: normal, Poisson, binomial, chi-square, t, F and others
- Capability: Cp, Cpk, Pp, Ppk, Cpm, process sigma, attribute and non-normal data
- Performance metrics: PPM, DPMO, DPU, first pass yield, rolled throughput yield
Analyze
- Correlation and linear regression, including residual analysis
- Multivariate tools: factor analysis, discriminant analysis, MANOVA
- Hypothesis testing terms: significance, power, type I and type II errors
- Sample size; confidence, prediction and tolerance intervals
- Tests for means, variances and proportions; ANOVA; chi-square goodness of fit
- Risk types and FMEA: RPN, design FMEA, process FMEA
- Gap analysis, root cause analysis (5 whys, fault tree, A3) and waste analysis
Improve
- DOE terminology and principles: power, replication, randomisation, blocking, confounding, resolution
- Planning experiments; one-factor, two-level fractional and full factorial designs
- Waste elimination: pull systems, kanban, 5S, standard work, poka-yoke
- Cycle-time reduction: continuous flow, SMED, heijunka
- Kaizen versus kaizen blitz; theory of constraints and OEE
- Implementation: pilot tests, simulations and selecting the optimum solution
Control
- SPC objectives, selection of variables and rational subgrouping
- Control chart selection: X-R, X-s, ImR, p, np, c, u, short-run, moving average
- Control chart analysis: common versus special causes
- Total productive maintenance and visual controls
- Measurement system reanalysis and the control plan
- Sustaining gains: lessons learned, SOPs, training hand-off, ongoing evaluation
Design for Six Sigma (DFSS) Framework and Methodologies
- DMADV: define, measure, analyze, design, validate
- DMADOV: adds an optimize phase
- Design for X: cost, manufacturability, test, maintainability
- Robust product design
- Tolerance design and statistical tolerancing
The computer-based exam is 165 questions in 4 hours 18 minutes, inside a 4.5-hour appointment; 150 are scored and 15 are unscored pretest items you cannot identify. The exam time includes a short tutorial, and the clock does not stop for breaks. It is open-book, but only for bound material - ring and spiral binders pass; hand-stapled notes, loose sheets and electronic copies do not, and collections of practice questions and answers are banned. A non-programmable calculator is allowed; a TI-89 is not. The Mandarin paper version is 150 questions in four hours.
What the weightings really mean
A percentage in an exam guide is a promise about how many questions get drawn from a section, not about how hard those questions are. On a paper of roughly 150 items, Measure at 25 items (16.7%) is worth about 25 questions and Design for Six Sigma (DFSS) Framework and Methodologies at 6 items (4.0%) is worth about 6. No single section decides the result on its own here - the largest is 25 items (16.7%) of the paper - so the result is decided by how few sections you leave weak, not by how well you master one.
The trap is treating that arithmetic as permission to skip. Weightings are the floor of what a section costs you, because the low-weight sections on almost every blueprint are the ones that supply context for questions filed under a different heading. You lose those marks in the heavy section and never find out why.
Reading the verbs in the objectives
The verb at the front of each sub-objective is the part candidates skim and examiners take literally. It sets the depth you are tested at, and it is the difference between recognising a term and being asked to choose between two answers that both look right.
| Verb | What a question at that depth looks like |
|---|---|
| Evaluate / Interpret | The ceiling on 28 subtopics, including capability indices, MSA, hypothesis tests, ANOVA and regression. Expect output or summary statistics and a question about which conclusion is valid - your reference book has the formula, not the judgement. |
| Analyze / Break down | 15 subtopics: VOC and customer-requirement tools, process flow metrics, root cause, gap and waste analysis, risk types. A messy scenario where you must pick the factor or tool that matters. |
| Apply / Select | The largest group, 32 subtopics: choosing the right control chart, sample size for a test of means or proportions, team decision methods, change management techniques. One correct tool for one stated situation. |
| Understand / Describe | 27 subtopics, including all of DFSS, the DOE design types, TPM and multivariate tools. Recognising the correct description, with no calculation. |
Each BoK subtopic carries ASQ's maximum cognitive level, taken from Bloom's revised taxonomy. The 2022 BoK uses only four of the six levels - nothing at Remember or Create - and the 2022 revision lowered the level on six areas and raised none.
Study it in this order, not the syllabus order
Exam guides are written to describe what a candidate must know, not to teach it. The published order is almost never the order that builds knowledge fastest. This is the sequence that front-loads the material everything else depends on.
| Order | Why here |
|---|---|
| 1. Define | 20 items (13.3%). VOC, charter, scope, project management and analytical tools. Start here because every later section assumes a chartered project. |
| 2. Measure | 25 items (16.7%), the largest section and the statistical base: data, sampling, MSA, distributions and capability. 13 of its 24 subtopics are tested at Evaluate. |
| 3. Analyze | 22 items (14.7%). Hypothesis tests, regression, ANOVA and FMEA reuse Measure's distributions directly, so take it straight after. |
| 4. Improve | 21 items (14.0%). DOE builds on ANOVA; the lean methods in the same section (SMED, kanban, poka-yoke) are quicker marks. |
| 5. Control | 17 items (11.3%). Control chart selection and interpretation, control plans, sustaining gains. Mostly Apply-level once Measure's variation concepts are solid. |
| 6. Team Management | 15 items (10.0%). Team stages, decision tools, conflict and training. Mostly Apply-level and terminology-driven - learn ASQ's labels rather than relying on experience. |
| 7. Organization-Wide Planning and Deployment + Organizational Process Management and Measures | 12 items (8.0%) each. Roles, change management, project selection, benchmarking, balanced scorecard, NPV and ROI. Short and largely definitional. |
| 8. Design for Six Sigma (DFSS) Framework and Methodologies | 6 items (4.0%), all at Understand level. DMADV, DMADOV, design for X and robust design - leave it for the end. |
The five DMAIC sections are 105 of the 150 scored items (70%), so the efficient path is the DMAIC sequence itself, then the people and strategy sections. Do not skip Team Management: at 15 items it outweighs either strategy section and is more than twice DFSS.
What changed, and how to spot the next change
No new CSSBB Body of Knowledge has been announced. The 2022 BoK, first tested in the September 2022 window, is still the current one in October 2026. That update was light: Organizational Process Management and Measures gained two items, as did Control; Team Management lost three and DFSS one, and contingency tables and non-parametric tests were removed. ASQ says very few programmes change significantly over a five-to-seven-year period, so a refresh from 2027 is plausible but unscheduled; when it comes, ASQ publishes a BoK map of the changes. CSSBB runs in odd-month testing windows. The exam costs $585, or $485 for ASQ members; a retake is $385 for everyone and must be taken within two years. Recertify every three years with 18 recertification units.
Two habits keep you from studying a retired outline. First, open the official exam guide and look for its revision date before you buy anything — courses and question banks lag a syllabus change by months, and the cheapest ones never catch up. Second, re-check it the week you book. A revision announced after you started studying is still a revision you sit.
Turn the syllabus into questions
Reading an outline tells you the shape of the paper. Answering questions tells you which sections you would actually lose marks on. Start free, then $5.99 unlocks the full CSSBB bank.
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What are the CSSBB body of knowledge sections and their weightings?
Nine, by ASQ's question counts out of 150 scored items: Organization-Wide Planning and Deployment 12 (8.0%), Organizational Process Management and Measures 12 (8.0%), Team Management 15 (10.0%), Define 20 (13.3%), Measure 25 (16.7%), Analyze 22 (14.7%), Improve 21 (14.0%), Control 17 (11.3%) and DFSS Framework and Methodologies 6 (4.0%). ASQ publishes counts, not percentages; the percentages are derived from them.
What is the passing score for CSSBB?
550 out of a possible 750. It is a scaled score: a panel of subject matter experts sets a raw cut score when a BoK is created, and later forms are equated so the standard stays constant. Passing candidates are not told their score; failing candidates get correct counts by subtopic. ASQ publishes pass rates for CSSBB: 76% in 2022, 75% in 2023 and 73% in 2024.
Do I need a completed Six Sigma project to sit the CSSBB?
Yes. You need two completed projects with signed affidavits, or one completed project with a signed affidavit plus three years of full-time, paid work experience in one or more BoK areas. The project champion signs the affidavit, which must show measured before-and-after benefits. It must reach ASQ within one week of your application or the application is cancelled with a partial refund. With no completed project, you cannot sit the exam.
How much does CSSBB cost in total?
The exam is $585, or $485 for ASQ members. A retake is $385 whether or not you are a member, must be taken within two years of your last attempt and cannot fall in the same testing window. Changing an appointment costs $130, and ASQ keeps $130 if your application is rejected. Once certified, you recertify every three years with 18 units; the journal fee is $160, or $120 for members.
Sources
Every section title, sub-objective and number on this page comes from the certifying body:
- https://www.asq.org/cert/six-sigma-black-belt
- https://www.asq.org/cert/resource/pdf/certification/cssbb-cert-insert.pdf
- https://www.asq.org/cert/resource/pdf/certification/2022-SSBB-BoK-Map.pdf
- https://www.asq.org/cert/resource/pdf/certification/ASQ-Certification-Candidate-Handbook.pdf
- https://www.asq.org/cert/faq/faq-exam-results
- https://www.asq.org/cert/faq/exam-grading-process
Checked October 7, 2026. Exam guides are revised without notice — confirm against ASQ before you build a study plan around this page.