How can LSS contribute to Continuous Improvement?

In the last few years, the Lean and the Six Sigma philosophies have merged to Lean Six Sigma as a holistic view and approach for continuous improvement. Lean Six Sigma is a combination of Lean Manufacturing and Six Sigma and uses a combined set of both Lean and Six Sigma tools. It also embraces best practices from other improvement methods like Total Quality Management, Total Productive Maintenance and Theory of Constraints. Lean Six Sigma includes a common goal of Lead Time reduction, operational cost reduction and overall quality improvement. Combining the synergies of Lean and Six Sigma provides organizations with greater speed, less variation and more bottom-line impact. Lately, many organizations have also added Agile to their continuous improvement strategy.

Our Mission

Lean Six Sigma Academy (LSSA) aims to create an open, professional and quality-driven Lean Six Sigma knowledge community. 


Support candidates by finding a training provider and getting prepared for certification by offering them guidelines, knowledge and sample exams.

Accredited Training Organizations:

Faciliate our network of Accredited Training Organizations (ATOs) with training content, reference books, exercise books, games, templates and dataset, in order to facilitate their trainings. Connect our global network of accredited trainers with ATOs.

Exam Institutes:

Provide exam service with clear certification guidelines, syllabi and exam content in multiple languages.


Download interesting publications, white papers, case studies, video’s and templates about Lean Six Sigma.

White Papers

View the opinions of Lean Six Sigma experts


Case Studies

Share the experiences of successful cases at different fields



Watch educational videos about Lean and Lean Six Sigma



Download publications to enhance your knowledge of both Lean and Six Sigma


Exam Institutes

LSSA works alongside the following professional Exam Service Providers to provide Lean and Six Sigma examinations to the market in both online and paper formats. They assure that exam sessions are deliveredsecurely and monitored by an appointed proctor.

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Lean Six Sigma Academy bookstore

For Lean, Lean Six Sigma and Automotive Engineering, we have developed a set of training content in multiple languages. As one of the most important components of the training content, the books are widely recommended and used by training providers and individuals who want to be certified. The book series called Climbing the Mountain demonstrates a cohesive set of improvement methods that have been proven to be successful over decades such as TQM, Kaizen, TPM, Lean and Six Sigma. These methods, tools and techniques have been united in the Continuous Improvement Maturity Model (CIMM™).

Are you interested in one of the books? Visit our online bookstore now! Would you like to receive more information?  Please call us upon +31(0)20 8945045 or email to for more information.

Lean Six Sigma Black Belt

H.C. Theisens

English & Dutch

Lean Six Sigma Green Belt

H.C. Theisens

English & Dutch

Lean Six Sigma Orange Belt

H.C. Theisens

English & Dutch

Lean Six Sigma Yellow Belt

H.C. Theisens

English & Dutch