What is Lean Six Sigma?

Lean Six Sigma is a data-driven process improvement approach that combines Lean (removing waste) and Six Sigma (reducing variation and defects), usually structured with the DMAIC cycle: Define, Measure, Analyze, Improve, Control.

What is the difference between Yellow, Green and Black Belt?

Yellow Belt covers the foundations and lets you contribute to improvement projects; Green Belt prepares you to lead DMAIC projects with statistical tools; Black Belt prepares you to lead complex projects, coach Green Belts and steer deployment.

How do I take an ILSSI certification exam?

Create your free account on the platform, then open the exam link provided by the academy. The exam is a timed multiple-choice test; the result is calculated by the server and a verifiable certificate is issued when you pass.

How can a certificate be verified?

Each ILSSI certificate has a unique reference and a QR code. Scanning the QR code or entering the reference on the verification page shows its validity, the holder, the level and the date of issue.

ILSSI / AFRICA THE NEXT CHAPTER

THE OPERATIONAL EXCELLENCE CAMPUS

Make excellence
your future.

Build your Lean Six Sigma skills. Learn to improve processes and take your career to the next level.

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Online learningExpert guidance

01 / 06

THE EXCELLENCE MINDSETσLEAN SIX SIGMA

DEFINESet the direction

IMPROVECreate the change

ACTIVATE YOUR POTENTIAL

Learn at your own paceAccess your courses online

Grow with expert supportTraining, coaching and consulting

Put knowledge into actionA process improvement approach

UNDERSTAND TO TRANSFORM

Six Sigma.
Less uncertainty.
More control.

WHAT IS SIX SIGMA?

Six Sigma is a data-driven approach to process improvement. It helps reduce variation and defects to deliver more consistent results that meet customer expectations.

Observe the facts, investigate the causes, test solutions and track their effects over time.

σIn statistics, sigma denotes standard deviation, a measure of spread. The method helps understand and manage that variability.

Start with the customer

Define what matters: a conforming product, a reliable response or a consistent service.

Decide with evidence

Measure the situation and verify the causes before choosing a solution.

Sustain improvements

Test, standardize and monitor results to prevent problems from returning.

LEANRemove waste

SIX SIGMAReduce variation

A smoother, more reliable process.Explore the 5 DMAIC steps

A PRACTICAL EXAMPLE

Do customer files frequently need corrections? A Six Sigma approach helps measure errors, identify causes and verify whether corrective actions work.

Try the Process Lab

Explore further: ASQ · Six Sigma ↗ · DMAIC ↗

DMAICσLeanσSix SigmaσKaizenσ5SσKanbanσPoka-YokeσSIPOCσVSMσGembaσSPCσCp · CpkσParetoσIshikawaσJust-in-TimeσTPMσSMEDσYellow BeltσGreen BeltσBlack BeltσDMAICσLeanσSix SigmaσKaizenσ5SσKanbanσPoka-YokeσSIPOCσVSMσGembaσSPCσCp · CpkσParetoσIshikawaσJust-in-TimeσTPMσSMEDσYellow BeltσGreen BeltσBlack Beltσ

Black BeltσGreen BeltσYellow BeltσSMEDσTPMσJust-in-TimeσIshikawaσParetoσCp · CpkσSPCσGembaσVSMσSIPOCσPoka-YokeσKanbanσ5SσKaizenσSix SigmaσLeanσDMAICσBlack BeltσGreen BeltσYellow BeltσSMEDσTPMσJust-in-TimeσIshikawaσParetoσCp · CpkσSPCσGembaσVSMσSIPOCσPoka-YokeσKanbanσ5SσKaizenσSix SigmaσLeanσDMAICσ

YOUR AMBITION, YOUR TRAJECTORY

Your progress starts here.

Explore Lean Six Sigma levels and find the right fit for your experience and goals.

THE FOUNDATIONS01

Yellow Belt

Understand. Contribute. Improve.

Understand Lean Six Sigma principles
Contribute to improvement initiatives
Recognize waste

PROJECT LEADERSHIP02

Green Belt

Structure your improvement projects.

Build a working knowledge of DMAIC
Analyze the causes of a problem
Support implementation

PERFORMANCE LEADERSHIP03

Black Belt

Lead ambitious transformations.

Develop deeper process analysis skills
Guide project teams
Build a culture of improvement

These levels describe a learning pathway. Browse the catalog for available courses and contact the academy about certification requirements.

LEARN WITH ILSSI ACADEMY

Your next step, online.

Go to my learning space

ONLINE COURSEYB

Yellow Belt8 modules · 29 lessons

Lean Six Sigma Yellow Belt

Maîtriser les fondamentaux du Lean et du Six Sigma pour participer efficacement à des projets d’amélioration et préparer la certification Yellow Belt.

8 modules29 lessons378 min

139 €

Noomen Gharsalli

Explore the course

ONLINE COURSEGB

Green Belt9 modules · 31 lessons

Lean Six Sigma Green Belt

Conduire un projet d'amélioration DMAIC de bout en bout, des données jusqu'à des résultats durables.

9 modules31 lessons415 min

390 €

Noomen Gharsalli

Explore the course

ONLINE COURSEBB

Black Belt13 modules · 60 lessons

Lean Six Sigma Black Belt

Piloter des projets de percée, maîtriser les statistiques avancées et conduire le déploiement Lean Six Sigma dans votre organisation.

13 modules60 lessons936 min

590 €

Noomen Gharsalli

Explore the course

Have a specific training project? Let’s build your learning path together

LEAN SIX SIGMA, IN ACTION

Go beyond understanding.
Experiment.

PROCESS LAB

Move the slider. See how reducing waiting time changes a process’s lead time.

LEARNING SIMULATION · A CUSTOMER FILE

BASELINE80 min

Waiting60 min

AFTER IMPROVEMENT50 min

Waiting30 min

Constant processing time: 20 minInitial waiting time: 60 min

Waiting time reduction50 %

0 %100 %

LEAD TIME REDUCED BY37,5%

↗

Same useful work. Less waiting. A more efficient flow.

Fictional educational example. Lead time = processing + waiting time. No actual results or guaranteed gains are implied.

ONE METHOD. REAL-WORLD APPLICATIONS.

Less waste.
More value.

Lean helps remove activities that add no value. Six Sigma helps understand variation and reduce defects. Together, they provide a structured approach to continuous improvement.

Understand Lean Six Sigma

DMAICYour improvement framework

Define the right problem.

Clarify the customer need, project scope and goal before looking for solutions.

Noomen Gharsalli, fondateur d’ILSSI Academy Africa

Noomen GharsalliFounder · ILSSI Academy AfricaLEAN SIX SIGMA MASTER BLACK BELT

KNOWLEDGE, GROUNDED IN EXPERIENCE

Real-world expertise.
An ambition for Africa.

The International Lean Six Sigma Institute Academy Africa supports professionals and organizations in developing skills and improving processes.

Its founder, Noomen Gharsalli, works in organizational performance and sustainable development. The academy presents consulting experience with the European Union, USAID TunisiaJobs, Hancho Concept and PRAGMA.

Operational excellenceSustainable developmentCoaching & consulting

Talk to the academy

FOR BUSINESSES & TEAMS

Develop your people.
Transform your results.

Every organization has its own challenges. We start with your context, people and processes to shape the right support.

Let’s discuss your project

Tailored training

Content aligned with your strategy, culture and operational priorities.

Project coaching

On-site or remote support to structure problem-solving.

Assessment & consulting

A review of your processes and Lean Six Sigma maturity to guide your next steps.

OUR ECOSYSTEM

Growing together.

Partners presented by ILSSI Academy Africa.

THE KEYS TO GETTING STARTED

Understand before you begin.

Guides & insights

YOUR QUESTIONS

Made simple.

Need personal guidance? Our team is here to help.

Where should I start with Lean Six Sigma?+

Yellow Belt introduces the foundations. If you already lead projects, talk to the academy to find a path that fits your experience.

How do I access my courses and exams?+

Use “My learning” to sign in to your existing account. Your courses and exams remain available on the ILSSI Academy platform.

What is the difference between training and certification?+

Training develops your knowledge and practical skills. Certification depends on the pathway and assessment criteria. Ask the academy about prerequisites and applicable requirements before enrolling.

Can you support a company team?+

Yes. The academy offers training, on-site or remote coaching and Lean Six Sigma maturity assessments. Contact us to discuss scope, format and timing.

SPCσCp · CpkσParetoσIshikawaσJust-in-TimeσTPMσSMEDσYellow BeltσGreen BeltσBlack BeltσDMAICσLeanσSix SigmaσKaizenσ5SσKanbanσPoka-YokeσSIPOCσVSMσGembaσSPCσCp · CpkσParetoσIshikawaσJust-in-TimeσTPMσSMEDσYellow BeltσGreen BeltσBlack BeltσDMAICσLeanσSix SigmaσKaizenσ5SσKanbanσPoka-YokeσSIPOCσVSMσGembaσ

GembaσVSMσSIPOCσPoka-YokeσKanbanσ5SσKaizenσSix SigmaσLeanσDMAICσBlack BeltσGreen BeltσYellow BeltσSMEDσTPMσJust-in-TimeσIshikawaσParetoσCp · CpkσSPCσGembaσVSMσSIPOCσPoka-YokeσKanbanσ5SσKaizenσSix SigmaσLeanσDMAICσBlack BeltσGreen BeltσYellow BeltσSMEDσTPMσJust-in-TimeσIshikawaσParetoσCp · CpkσSPCσ

WHAT IF IT ALL STARTED TODAY?

Let’s talk about
your next step.

A course, a certification or a business project: let’s build what comes next together.

EMAIL USinfo@ilssi.academy CALL US+216 53 425 147

A pathway built around you.

Tell us about your goal and current experience. Our team can guide you toward a suitable course or support program.

Contact the academy

7, Rue Ahmed Rami, cité Jardin
Tunis-Belvédère 1002, Tunisie

Make excellence
your future.