About IDEX California®

The IDEX California® is the exam for achieving certification, the highest standard for interior designers in the state.

Carol Lamkins, CID, CMKBD, is one of the founding members of CCIDC’s IDEX California® Task Force who created and verified the exam.  She is active in the on-going review and updating of the exam.

CCIDC, the interior design certification board, requested CLCID, the non-profit legislative coalition, create an exam preparation class inclusive of ALL of the contents of the IDEX California®.  Carol Lamkins took the challenge on behalf of CLCID.  The Original IDEX CA Prep Class© reflects the directive of CCIDC and was presented prior to the first IDEX California® in the spring of 2009.  It is the ORIGINAL and is the first Authorized Partner with CCIDC-IDEX California®.

The Original IDEX CA Prep Class© is the only prep class that supports interior design legislative efforts with its profits.


Here are some things you should know about the IDEX California®.

  • There are two versions of the exam, each with some of the same questions and some different questions.

  • There are 150 questions (equaling 150 points).

  • You have three hours to complete the multiple choice computerized exam.

  • Apply for the exam directly with CCIDC (link below).

  • Go to www.ccidc.org to make an appointment at a testing site near you after your application for the IDEX California® is accepted.

  • Exam results are sent directly to you from CCIDC.

IDEX California® multiple choice questions are derived from three areas:

Building Codes
Business Practices & Ethics
Design Standards
Click hereto apply for the IDEX California®

Go to www.ccidc.org for the most up-to-date information concerning the qualifications to sit for the exam and the certification process.  This is also where you apply to sit for the IDEX California®.

The California Council for Interior Design Certification (CCIDC) administers the Certified Interior Designer Law under Chapter 3.9, Section 5800 of the California Business and Professions Code.  Certification by CCIDC is the highest standard of professionalism for interior designers in the state of California.

idex prep class