NCIDQ® Exam Prep

Comprehensive study materials for all three NCIDQ exams, including the IDFX, IDPX, and PRAC sections.

Explore NCIDQ Exam Bundle Options

To be a certified interior designer, you must take and pass all three sections of the NCIDQ exam. NCIDQ certification is the industry's recognized indicator of proficiency in interior design principles and a designer's commitment to the profession. Through certification, you show a high level of commitment to the interior design profession, proven knowledge of current standards established to protect public health, safety, and welfare, and mastery of aesthetic considerations.

PPI's Exam Prep Bundles are designed to ensure you have everything you need for exam day success. Explore each bundle option below, or compare our bundles, to find the study option that fits your learning style.

About the NCIDQ Complete Exam Bundle

Our NCIDQ Complete Exam Bundle thoroughly covers every topic and provides you with all the materials you need.

What’s included

  • Covers all three exam sections
  • David Ballast’s NCIDQ Interior Design Reference Manual
  • Hundreds of practice problems and flash cards

About the NCIDQ Complete Exam Bundle

Distinguish yourself as a Professional Interior Designer by passing all three NCIDQ exams with study materials from PPI. This Complete Exam Bundle contains all the materials you need to prepare for and pass the NCIDQ exams the first time.

What's Included:

Print Materials
PPI NCIDQ IDPX Flash Cards
NCIDQ IDPX Flash Cards, Second Edition has been updated to current exam specs and is the perfect complement to your exam study. Easily taken on the go, the cards come with six binder rings for easy organization.
PPI NCIDQ IDFX Flash Cards
NCIDQ IDFX Flash Cards, Second Edition has been updated to current exam specs and is the perfect complement to your exam study. Easily taken on the go, the cards come with six binder rings for easy organization.
Digital Materials
These downloadable content map PDFs will help you navigate our content to prepare for the 2026 exam specifications onward.
Print or etextbooks
NCIDQ Fundamentals Practice Questions and Mock Exam
New Edition - Updated to Current IDFX Exam Specifications - NCIDQ Fundamentals Practice Questions and Mock Exam contains 225 exam-like, multiple-choice questions that will help you pass the Interior Design Fundamentals Exam (IDFX).
NCIDQ Interior Design Reference Manual
New Edition - Expanded Content for Even Better Exam Coverage - Interior Design Reference Manual by David Ballast offers a complete review for all three sections of the NCIDQ Certification exam. This book works in conjunction with division specific practice exams to help you pass every section the first time.
 
The NCIDQ Interior Design Reference Manual features include:
 
  • Complete coverage of content areas for all three sections of the NCIDQ Exam
  • Updated for the IBC 2018 changes included in the exam
  • Over 200 figures in SI and U.S. measurements to illustrate design details
  • Study guidelines, exam tips, and tables to support exam preparation
  • New for this edition - revised and updated content to increase exam specification coverage
NCIDQ Professional Practie Questions and Mock Exam

New Edition - Updated to Current IDPX Exam Specifications - NCIDQ Professional Practice Questions and Mock Exam contains 275 exam-like, multiple-choice questions that will help you pass the NCIDQ Interior Design Professional Exam (IDPX).

NCIDQ Practicum Mock Exam
New Edition - Updated to Current PRAC Exam Specifications - NCIDQ Practicum Mock Exam contains 3 case studies with 120 exam-like problems that will help you pass the NCIDQ Interior Design Practicum Exam (PRAC).

Purchase Options

Complete Bundle: All Three NCIDQ Exam Sections
$655.00

Our NCIDQ Complete Exam Bundle thoroughly covers every topic and provides you with all the materials you need.

What’s included

  • Covers all three exam sections: IDFX, IDPX, and PRAC exam content
  • David Ballast’s NCIDQ Interior Design Reference Manual
  • Hundreds of practice problems
  • All-new editions updated to current exam specifications

About the NCIDQ Complete Exam Bundle

Distinguish yourself as a Professional Interior Designer by passing all three NCIDQ exams with study materials from PPI. This Complete Exam Bundle contains all the materials you need to prepare for and pass the NCIDQ Interior Design Fundamental (IDFX), Professional (IDPX) and Practicum (PRAC) exams.

$655.00

About the NCIDQ Mock Exam Bundle

The NCIDQ Mock Exam Bundle offers complete practice for all three sections of the NCIDQ Certification exam. This practice bundle works in cohesion with the NCIDQ Interior Design Reference Manual by David Ballast, to help you pass each division the first time.

What's Included:

Print Materials
PPI NCIDQ IDPX Flash Cards
NCIDQ IDPX Flash Cards, Second Edition has been updated to current exam specs and is the perfect complement to your exam study. Easily taken on the go, the cards come with six binder rings for easy organization.
PPI NCIDQ IDFX Flash Cards
NCIDQ IDFX Flash Cards, Second Edition has been updated to current exam specs and is the perfect complement to your exam study. Easily taken on the go, the cards come with six binder rings for easy organization.
Digital Materials
These downloadable content map PDFs will help you navigate our content to prepare for the 2026 exam specifications onward.
Print or etextbooks
NCIDQ Fundamentals Practice Questions and Mock Exam
New Edition - Updated to Current IDFX Exam Specifications - NCIDQ Fundamentals Practice Questions and Mock Exam contains 225 exam-like, multiple-choice questions that will help you pass the Interior Design Fundamentals Exam (IDFX).
NCIDQ Professional Practie Questions and Mock Exam

New Edition - Updated to Current IDPX Exam Specifications - NCIDQ Professional Practice Questions and Mock Exam contains 275 exam-like, multiple-choice questions that will help you pass the NCIDQ Interior Design Professional Exam (IDPX).

NCIDQ Practicum Mock Exam
New Edition - Updated to Current PRAC Exam Specifications - NCIDQ Practicum Mock Exam contains 3 case studies with 120 exam-like problems that will help you pass the NCIDQ Interior Design Practicum Exam (PRAC).

Purchase Options

NCIDQ Mock Exam Bundle
$415.00
$415.00

Q Practice LogoSubscription review plans from Qpractice.

Monthly Premium Access

$159 Monthly
(Renewing)

  • IDFX, IDPX, & PRAC Courses and Lessons
  • IDFX, IDPX, & PRAC Study Guide and Quizzes
  • IDFX, IDPX, & PRAC Practice Tests
  • IDFX, IDPX, & PRAC Workshops
  • Work Experience Assessment
  • Daily Study Schedule
  • VIP Study Group for Q&A with mobile app
  • Live & Recorded Office Hours and Chats
  • Answer Vault: Recorded Audio/Video Q&A

 

PPI may earn commission for purchases through this link.

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4-Month Premium Access

From $596 / 4-Months

4-month fixed membership includes choice of textbook.

  • IDFX, IDPX, & PRAC Courses and Lessons
  • IDFX, IDPX, & PRAC Study Guide and Quizzes
  • IDFX, IDPX, & PRAC Practice Tests
  • IDFX, IDPX, & PRAC Workshops
  • Work Experience Assessment
  • Daily Study Schedule
  • VIP Study Group for Q&A with mobile app
  • Live & Recorded Office Hours and Chats
  • Answer Vault: Recorded Audio/Video Q&A
  • Plus, your choice of textbook

 

PPI may earn commission for purchases through this link.

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12-Month Premium Access

$1908 $1490 / 12-Months

Upgrade to 12-month access and get 2 free months.

  • IDFX, IDPX, & PRAC Courses and Lessons
  • IDFX, IDPX, & PRAC Study Guide and Quizzes
  • IDFX, IDPX, & PRAC Practice Tests
  • IDFX, IDPX, & PRAC Workshops
  • Work Experience Assessment
  • Daily Study Schedule
  • VIP Study Group for Q&A with mobile app
  • Live & Recorded Office Hours and Chats
  • Answer Vault: Recorded Audio/Video Q&A

 

PPI may earn commission for purchases through this link.

Learn More

Do you have a group of 5 or more? Check out Qpractice Team Plans.

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Prepare for the LEED® Green Associate exam with focused practice that mirrors the style and difficulty of the actual test.

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Exam Details for the NCIDQ Exam

NCIDQ certification is the industry's recognized indicator of proficiency in interior design principles and a designer's commitment to the profession. To earn certification, qualified interior designers can apply to take the NCIDQ Examination. After CIDQ approves their eligibility, candidates register for each of the three sections of the exam and must pass each section within a specified time-frame. The exam is continually updated to ensure it aligns with the most current professional knowledge necessary to design spaces that are innovative, functional, and safe. The three separate sections of the NCIDQ Exam are: the Interior Design Fundamentals Exam (IDFX), the Interior Design Professional Exam (IDPX), and the Interior Design Practicum Exam (PRAC).

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NCIDQ Exam FAQs

The Council for Interior Design Qualification (CIDQ) administers the NCIDQ Exam. CIDQ, which is composed of regulatory boards from across the United States and Canada, takes seriously its responsibility to protect the public. Accordingly, CIDQ specific education and work experience requirements exist to be eligible to sit for the NCIDQ Examination. You must have official education transcripts and they must include a minimum of 60 semester or 90 quarter credit hours of post-secondary interior design coursework that encompasses a certificate, degree, or diploma from an accredited institution to be eligible. You must also have experience, which consists of up to 1,760 hours of interior design work experience earned prior to graduation. Regardless, CIDQ also warns that meeting CIDQ's education and work experience requirements does not guarantee that a candidate will meet their jurisdiction's requirements to be a licensed interior designer. Individuals are reminded to check with their jurisdiction regarding those specific requirements.
The Interior Design Fundamentals Exam (IDFX), Interior Design Professional Exam (IDPX), and the Interior Design Implementation Exam (IDIX) exams are scored by computer.  Scores are reported on a scale ranging from 200 (0 correct) to 800 (all correct), with the passing point anchored at 500. Results for each exam are processed within 6-8 weeks of the close of the window. Candidates who sat for the exam will receive an email notification once the score has been processed and is available to view in MyNCIDQ. CIDQ takes this time to guarantee that all scores are fair and accurate.

In collaboration with interior designer practitioners, educators, and testing professionals, CIDQ has set a passing point (or cut score) for each NCIDQ Exam. Meeting the passing standard for all three exam sections and achieving NCIDQ certification demonstrates that a candidate is competent to practice in a way that protects the health, safety, and welfare of the public.  The passing point does not change based on your location, the number of candidates taking the exam, or the performance of other candidates taking the exam.

Please look at this infographic by CIDQ for further information 

The Interior Design Fundamentals Exam (IDFX) covers six distinct areas that capture the core competencies of interior design: 

  • Existing Conditions
  • Pre-Design
  • Programming
  • Space Planning
  • Preliminary FF&E and Finishes
  • Schematics

The Interior Design Professional Exam (IDPX) covers five distinct areas that capture the core competencies of interior design: 

  • Feasibility Studies
  • Scheduling and Budgeting
  • Contracts, Procurement, and Permitting
  • Construction Process
  • Site Observation and Close-Out

The Interior Design Implementation Exam (IDIX) covers five distinct areas that capture the core competencies of interior design: 

  • Codes and Life Safety
  • Integration and FF&E
  • Construction Documents
  • Consultant Drawing Coordination
  • Construction Specifications and Schedules
For more detailed information on topics for this divisional exam, please visit the CIDQ website.
The NCIDQ exam is administered by the Council for Interior Design Qualification (CIDQ) - the certifying organization for interior design professionals.

The NCIDQ exam is divided into three sections:

  • Interior Design Fundamentals Exam (IDFX)
  • Interior Design Professional Exam (IDPX)
  • Interior Design Implementation Exam (IDIX)
All are administered by computer and machine graded. All three exams are available to take throughout the entire months of April and October.

For more detailed information on topics for this exam section, please visit the CIDQ website.

NCIDQ Certification is the industry's recognized indicator of proficiency in interior design principles and a designer's commitment to the profession.

To become a certified interior designer in the United States, you’ll need to take the NCIDQ (National Council for Interior Design Qualification) exam. The NCIDQ is administered by the CIDQ, which stands for Council of Interior Design Qualification, and is currently the only nationally-recognized competency exam for interior design. Obtaining your NCIDQ Certification recognizes your proficiency in interior design principles and your commitment to the profession.

The NCIDQ ensures the safety and wellbeing of the public by requiring that design professionals are held to the highest standards in the industry. The content of the exam represents the foundational knowledge you need to be able to branch out into a specialty design area afterwards. The NCIDQ exam consists of three sections: the Fundamentals Exam (IDFX), the Professional Exam (IDPX), and Implementation Exam (IDIX). Each section focuses on public health, safety and welfare.