Online Courses from GLSS
Lean Six Sigma Yellow, Green & Black Belt
Learn structured problem-solving that builds trust and culture - not just fixes processes.
#1 Rated • Learn By Doing • 24/7 Support • Trusted by 7,000+ Companies
Yellow Belt (GLSS)
This online course teaches you how to improve your own processes by:
- Defining clear goals
- Gathering information about root causes
- Implementing effective solutions
Green Belt (GLSS)
This online course teaches you to lead improvement projects that deliver significant results:
- DMAIC methodology (Define, Measure, Analyze, Improve & Control)
- Data analysis and process mapping
- Root cause analysis tools
Black Belt (GLSS)
This online course teaches you advanced methods to:
- Lead improvement programs
- Strengthen your leadership skills
- Perform statistical analysis
- Coach and support others
Try Free for 14 Days
Full access to all courses - no commitment - $499 per year after trial period (including new Leadership course)
What Do You Get?
- Full access to all four certifications
- Study at your own pace
- Globally recognized certificates
- 14-day free trial, then $499/year
Price Comparison
| Course | Price per year | Membership per year |
|---|---|---|
| Yellow Belt | $99 | ✓ Included |
| Green Belt | $599 | ✓ Included |
| Black Belt | $999 | ✓ Included |
| Total | $1,697 | $499 |
About GLSS and Ethical Efficiency
GLSS was founded by Karlo Tanjuakio with one vision: Lean Six Sigma that builds culture - not just fixes processes.
He calls it "Ethical Efficiency" - the balance between productivity and responsibility for people.
As he writes in his Forbes article:
"Let's not just do things right; let's do the right things."

What Do Organizations say about GLSS?
"GLSS does a great job explaining Lean Six Sigma in an easy to follow format – and that's not an easy task."
- Scott Lamon, Continuous Improvement Manager, London Drugs
"With GLSS, we were applying the tools to a real project which solidified learning much better."
- Eunjoo Greenhouse, Deputy Director, King County
"What enabled us to reach our goals was the accessibility and user-friendly design of the GLSS platform—its remote learning model, self-guided structure, and overall affordability."
- David Welsh, Vice President of Operations, Radial
GLSS is chosen by Fortune 500 companies, government agencies, and over 3,000 universities worldwide.