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Prepaway – A Thorough Dissection of Six Sigma Certification Exams

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It comes as no surprise as to why Six Sigma continues to thrive across different sectors and garner the trust of many companies. These big companies can rely on Six Sigma’s efficient and innovative risk-reducing tools, techniques, and processes that contribute to the entire quality of its organizations.

Because of this, a Six Sigma Certification-holder is at an advantageous place of helping build himself/herself as well as the organization he/she is a part of. However, these professionals did not acquire their certifications by luck. They had to wear the practitioner suit and earn such highly-industry-regarded credential by passing a qualifying exam that entails rigorous training and mental-sharpening.

About the Six Sigma Certification

The level of a Six Sigma practitioner is labeled according to belt colors. And as you attain each belt, your credibility, proficiency, and marketability heighten. To learn more about the different certification skill levels along with its corresponding requirements and go-to training materials, let’s continue the discussion below.


Successfully responding to a stretch of defects, risks, error, and other process vulnerabilities is a must-skill for Six Sigma certified professionals. The certification verifies your level of expertise in employing varied responsibilities through the Six Sigma processes in keeping an organization’s business processes smooth-sailing and reliable.

Where to obtain your Six Sigma Certification

The Six Sigma certification does not belong to any fixed accreditation body. This means that you can earn it from any globally-competent certification body, unlike other IT certifications. International Association for Six Sigma Certification (IASSC) is one of the internationally-acknowledged organizations where you can achieve this certification.

The Six Sigma Belts Certification by IASSC

Although this set does not act as a prerequisite to one another, the different belt colors still signify the corresponding skill levels of the Six Sigma certification holders. Below are the following Six Sigma belt certifications from the IASSC.

1. IASSC Certified Yellow Belt

If White Belts have the Six Sigma core knowledge, then Yellow Belts have the initiative as to what this knowledge is used for. This entry-level certification is what will deliver you as a project team member who improves projects, engages in analysis, data collections, and problem-solving endeavors.

The IASSC offers a Yellow Belt Exam that is made up of 60 questions, across topics that cover the core elements of the IASSC Lean Six Sigma Yellow Belt Body of Knowledge. This exam is a closed book test and is answerable within 2 hours.

2. IASSC Certified Green Belt

An IASSC Certified Green Belt credential introduces your reputation as a well-versed professional who can lead improvement projects along with the black belts using your know-how in the Lean Six Sigma methodology, along with the DMAIC approach. Green belts show proficiency in understanding statistical analysis, identifying and solving problems as well as assisting black belts in project-leading.

For 3 hours, you must complete all 100 questions in the IASSC Certified Lean Six Sigma Green Belt Exam. You must showcase your grasp of the important elements of the Lean Six Sigma as a Green Belt practitioner.

3. IASSC Certified Black Belt

Professionals who own an IASSC Certified Black Belt certification act as the anchor of the intricate improvement projects. They are highly-effective communicators, leaders, trainers, and supervisors of their respective project members who are Yellow and Green Belt-holders.

The IASSC provides a closed book exam for promising Lean Six Sigma Black Belts. To achieve this advanced-level Black Belt certification, you must pass the 150-question, proctored exam within 4 hours.

Six Sigma vs. Lean

Six Sigma and Lean Six Sigma play a significant role in every organization through its assessments that create and deliver measurable results. Though both are meant to provide a more efficient and effective system, they have different ways of doing such. Their approach in identifying the source of waste is different. For Six Sigma, they consider the process variations as the cause. Comparatively, the Lean approach deems that this waste is a result from unnecessary steps within the process.

Whilst both have differences, Six Sigma and Lean Six Sigma are highly advantageous among businesses. These are utilized to improve and develop valuable business structures for a successful overall performance. So whatever the choice, you are guaranteed of a competent way to ensure that the business is at its best state.

Collection of Six Sigma Training Materials

Free Six Sigma courses for the following belts are offered by the Six Sigma Online. This online resource supplies you with basic to advanced training programs of the belt exams. Aside from that, you can access different sets of materials for different Six Sigma exams at your own preferred time. It provides no-cost self-study Six Sigma training guides along with a comprehensive set of full edition manuals. PrepAway, on the other hand, is another credible resource that extends an extensive pack of practice exams, training courses and a study guide.

So, if you want an impressive understanding of the all the concepts, structure, and fundamental features that comes along with the Six Sigma methodology, then be sure to allocate enough time to prepare for the exams. Give yourself a solid introduction to the rudimentary yet long-lasting foundation of Six Sigma.


As a two-way street, you’re doing your career a favor and the organization you’re working for with a Six Sigma certification. Regardless of what belt you’re aiming for, this certification is a mark that you’re a top-functioning, diligent, and progressive professional.

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