National Credential
Credential: Certified Lean Six Sigma Yellow Belt (ICYB)
Credentialing Agency: International Association for Six Sigma Certification (IASSC)

The International Association for Six Sigma Certification (IASSC), Certified Lean Six Sigma Yellow Belt (ICYB) is a professional who is well versed in the foundational elements of the Lean Six Sigma Methodology. ICYBs possess a thorough understanding of the elementary aspects of the Lean Six Sigma Method including competence in the subject matters contained within the phases of Define, Measure, and Control (DMC) as defined by the IASSC Lean Six Sigma Yellow Belt Body of Knowledge and understand how to implement, perform, interpret and apply Lean Six Sigma in a skilled yet limited and / or supportive context. ICYBs lead limited improvement projects and/or serve as team members on more complex improvement projects lead by a Certified Green Belt or Certified Black Belt, typically in a part-time role. There are no prerequisites for the ICYB. Candidates must take a written exam.

More information can be found on the certifying agency's website.

Renewal Period: 3 years

Certified Lean Six Sigma Yellow Belt (ICYB)

The following Army Occupations provide training and/or experience that contributes to attaining this credential:

Personnel Category Occupation Occupation Type Related As Promotion Points Skill Level Star Proponent Funded Gap Analysis
Enlisted Soldier Common Core MOS some          
Enlisted Manager MOS other          

Army Table Legend


Related As

The military occupations shown in this table are related to this credential in one of four ways: Most, Some, or Other.

Most: This credential is directly related to most of the major duties associated with the military occupation (at least 80%). Note that the credential may require additional education, training or experience before you are eligible for it.

Some: This credential is related to some tasks associated with the duties of the military occupation (related 80% to at least one or more critical tasks but less than 80% of all of the entire military occupation). Note that the credential may require additional education, training or experience before you are eligible for it.

Other: This credential is related to this military occupation, but is more advanced or specialized and therefore will likely require additional education, training, or experience.

Promotion Points Promotion Points icon

This credential has been approved for promotion points for this MOS towards promotion to Sergeant and Staff Sergeant. Clicking the Promotion Points icon will open a link to the promotion points fact sheet.

Skill Level Designation

Skill Level I: This skill level consists of all Soldiers in the ranks of Private (pay grade E-1) up to Specialist (pay grade E-4). Time in Service (TIS) is generally between initial entry and four Years of Service (YOS). This skill level is Entry-level positions requiring performance of tasks under direct supervision.

Institutional training:

  • Structured Self-Development (SSD) level I
  • Basic Leader Course (BLC)

Skill Level II: This skill level is obtained when promoted to Sergeant (paygrade E-5). TIS is generally between 4-8 YOS. Positions requiring performance of more difficult tasks under general supervision; and in some instances, involving supervision of Soldiers in SL1.

Institutional training:

  • Structured Self-Development (SSD) level II
  • Advance Leader Course (ALC)

Skill Level III: This skill level is obtained when promoted to Staff Sergeant (paygrade E-6). TIS is generally between 8-12 YOS. Positions requiring performance of still more difficult tasks and involving first line supervision of Soldiers in SL1 & SL2.

Institutional training:

  • Senior Leader Course (SLC)
  • Structured Self-Development (SSD) level III

Skill level IV: This skill level is obtained when promoted to the rank of Sergeant First Class (paygrade E-7). TIS is generally between 12-18 YOS. Positions requiring relatively detailed knowledge of all tasks specified for a given MOS, normally involving first-line supervision of Soldiers in SLs 1, 2, and 3, and involving managerial duties.

Institutional training:

  • Master Leader Course (MLC)
  • Structured Self-Development (SSD) level IV
  • Senior Enlisted Joint Professional Military Education (SEJPME) I Course

Skill level V: This skill level is obtained when promoted to the rank of Master Sergeant (paygrade E-8). TIS is generally between 18-22 YOS. Positions requiring direct and indirect leadership roles with expertise in company and battalion-level operations and competency across a given CMF, serving as members of a staff at every level in the Army, with a full understanding of the allocation of resources and their utilization in order to accomplish Army functions and missions.

Institutional training:

  • United States Army Sergeants Major Academy (USASMA)
  • Structured Self-Development (SSD) level V

Skill level VI: This skill level is obtained when promoted to the rank of Sergeants Major (paygrade E-9). TIS is generally between 22-30 YOS. Positions requiring organizational leadership roles with multi-dimensional expertise in units and teams on division, corps, and Army staffs, integrated with Joint, Interagency, Intergovernmental, and Multinational (JIIM) partners with a full understanding of the Force Generation process, operations at all echelons, and how the Army runs.

Star Credential Star icon

Star credentials are MOS enhancing, as designated by the Proponent. MOS enhancing credentials are directly related to an MOS or ASI, are taught either partially or completely as part of a Program of Instruction (POI), and improve the MOS technical proficiency.

Proponent Funded Funded icon

This icon indicates credentials which Soldiers may have funded through their MOS proponent. Some proponents offer credentialing opportunities in conjunction with military training and/or as part of MOS development beyond the training base.

Gap Analysis Has Analysis icon

A detailed analysis comparing the credential requirements to the military occupation has been completed. Click on the gap analysis icon to view the analysis page.

Certified Lean Six Sigma Yellow Belt (ICYB)

Eligibility Requirements ()

Note: This credential may have multiple options for becoming eligible. Listed below are the minimum requirements based on the minimum degree required. To view other options, see the Eligibility tab.

  • Credential Prerequisite
  • Experience
  • Education
  • Training
  • Membership
  • Other
  • Fee

Exam Requirements ()

  • Written Exam
  • Oral Exam
  • Practical Exam
  • Performance Assessment

Renewal Period: 3 years

  • Continuing Education
  • Exam
  • Continuing Education OR Exam
  • Fee
  • Other

International Association for Six Sigma Certification (IASSC)
2415 East Camelback Road, Suite 700
Phoenix, AZ  85016
Phone: (602) 734-0561
Contact Page

Certified Lean Six Sigma Yellow Belt (ICYB)

  • Define Phase
    • The Basics of Six Sigma
    • The Fundamentals of Six Sigma
    • Selecting Lean Six Sigma Projects
    • The Lean Enterprise
  • Measure Phase
    • Process Definition
    • Six Sigma Statistics
    • Measurement System Analysis
    • Process Capability
  • Control Phase
    • Lean Controls
    • Six Sigma Control Plans

There are a number of resources available to help you prepare for the Certified Lean Six Sigma Yellow Belt (ICYB) examination:

An additional resource is Safari Books Online, a searchable digital library that provides online access to thousands of books, training videos and conference sessions. See the Educational Resources page here on COOL to learn how to get free access.

Testing for this credential is handled by Pearson VUE. The test centers are located in the U.S. They also have some test centers on military bases.

To find out more, use the following links on the Pearson VUE website:

For more information on the International Association for Six Sigma Certification (IASSC) testing process, visit the agency website.

Certified Lean Six Sigma Yellow Belt (ICYB)

Renewal Period: 3 years

The Certified Lean Six Sigma Yellow Belt (ICYB) credential has the following recertification information:

  • A status of current is granted for a period of 3 years from the time a certification holder has received the ICYB certification.
  • ICYB certification holders interested in maintaining a certification status of current will be required to complete a recertification exam to demonstrate continued competence.
  • An elapsed status is applied to certifications beyond 3 years from the day a certification holder achieved certification unless the individual has recertified.

Additional information can be found on the IASSC website.

Certified Lean Six Sigma Yellow Belt (ICYB)

Additional considerations for the Certified Lean Six Sigma Yellow Belt (ICYB) include:

  • It is recommended, but not required, for candidates to take the Lean Six Sigma training through a qualified institution, Lean Six Sigma trainer or corporate program prior to taking the exam.