Observed arrival · 2026-09-28
Interior Prep Studio’s published-only study library
A self-paced study system for the NCIDQ’s IDFX, IDIX, and IDPX exams, with lessons, practice questions, and timed exams.
- For
- NCIDQ candidates preparing for IDFX, IDIX, or IDPX
- Worth noticing
- Each program lists nine full-length timed exams; library counts exclude draft, inactive, and under-review material.
Field notes
The library is split by exam blueprint: IDFX covers foundational knowledge, IDIX technical execution, and IDPX professional practice. Published totals exclude draft, inactive, and under-review material, and a question is counted once even if it appears in multiple study sets. The readiness display uses first-attempt practice accuracy by content area; lesson completion and flashcards do not affect it, and the site explicitly says this internal metric is not a CIDQ score or pass-probability estimate.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue